在cpu x86下编译mindsporelite 1.8 分支 export MSLITE_ENABLE_FP16=on 后出错

| name       | about	                             | labels   |
| ---------- | ------------------------------------- | -------- |
| Bug Report | Use this template for reporting a bug | kind/bug |

### Describe the current behavior / 问题描述 (Mandatory / 必填)
 在x86下编译mindsporelite 1.8 分支 export MSLITE_ENABLE_FP16=on 后出错。 export MSLITE_ENABLE_FP16=off 可以编译成功。
 
### Environment / 环境信息 (Mandatory / 必填)
- **Hardware Environment(`CPU`)  / 硬件环境**: CPU
> Please delete the backend not involved / 请删除不涉及的后端:
> CPU

- **Software Environment / 软件环境 (Mandatory / 必填)**:
-- MindSpore version (e.g., 1.7.0.Bxxx) :1.8.2
-- Python version (e.g., Python 3.7.5) :3.8.13
-- OS platform and distribution (e.g., Linux Ubuntu 16.04):Ubuntu 18.04
-- GCC/Compiler version (if compiled from source):  gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0

- **Excute Mode / 执行模式 (Mandatory / 必填)(`PyNative`/`Graph`)**: 
> Please delete the mode not involved / 请删除不涉及的模式:
> /mode pynative
> /mode graph

### Related testcase / 关联用例 (Mandatory / 必填)
 
### Steps to reproduce the issue / 重现步骤 (Mandatory / 必填)
1. export JAVA_HOME=""
2. export MSLITE_ENABLE_SSE=on
3. export MSLITE_ENABLE_AVX=off
4. export MSLITE_ENABLE_FP16=on
5. bash build.sh -I x86_64

### Describe the expected behavior / 预期结果 (Mandatory / 必填)

编译成功
 
### Related log / screenshot / 日志 / 截图 (Mandatory / 必填)

[ 37%] Building C object build/CMakeFiles/nnacl_mid.dir/base/cast_base.c.o
In file included from /data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/base/cast_base.c:17:0:
/data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/../nnacl/base/cast_base.h:47:47: error: unknown type name 'float16_t'; did you mean 'u_int16_t'?
 inline void Int64ToFp16(const int64_t *input, float16_t *output, int number) {
                                               ^~~~~~~~~
                                               u_int16_t
/data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/../nnacl/base/cast_base.h:53:47: error: unknown type name 'float16_t'; did you mean 'u_int16_t'?
 inline void Int32ToFp16(const int32_t *input, float16_t *output, int number) {
                                               ^~~~~~~~~
                                               u_int16_t
/data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/../nnacl/base/cast_base.h:59:43: error: unknown type name 'float16_t'; did you mean 'u_int16_t'?
 inline void BoolToFp16(const bool *input, float16_t *output, int number) {
                                           ^~~~~~~~~
                                           u_int16_t
/data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/../nnacl/base/cast_base.h:65:47: error: unknown type name 'float16_t'; did you mean 'u_int16_t'?
 inline void Uint8ToFp16(const uint8_t *input, float16_t *output, int number) {
                                               ^~~~~~~~~
                                               u_int16_t
/data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/../nnacl/base/cast_base.h:71:47: error: unknown type name 'float16_t'; did you mean 'u_int16_t'?
 inline void Float32ToFp16(const float *input, float16_t *output, int number) {
                                               ^~~~~~~~~
                                               u_int16_t
/data/dockerexchage/mindsporelite1.8/mindspore/ccsrc/plugin/device/cpu/kernel/nnacl/../nnacl/base/cast_base.h:77:33: error: unknown type name 'float16_t'
 inline void Fp16ToFloat32(const float16_t *input, float *output, int number) {
                                 ^~~~~~~~~
build/CMakeFiles/nnacl_mid.dir/build.make:120: recipe for target 'build/CMakeFiles/nnacl_mid.dir/base/cast_base.c.o' failed
make[2]: *** [build/CMakeFiles/nnacl_mid.dir/base/cast_base.c.o] Error 1
CMakeFiles/Makefile2:827: recipe for target 'build/CMakeFiles/nnacl_mid.dir/all' failed
make[1]: *** [build/CMakeFiles/nnacl_mid.dir/all] Error 2
Makefile:170: recipe for target 'all' failed
make: *** [all] Error 2

### Special notes for this issue/备注 (Optional / 选填)

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