target/riscv/kvm: update the KVM regs to Linux rvck-6.6 · Pull Request !1615 · openEuler/qemu

**【功能验证】** 
1. 在qemu仿真器中验证kvm虚拟机
2. 仿真器内核版本：rvck-6.6
3. kvm虚拟机内部内核版本： rvck-6.6

qemu-kvm虚拟机启动命令：
```
/data/qemu/build/qemu-system-riscv64 \
        -nographic -enable-kvm \
        -machine virt,pflash0=pflash0,pflash1=pflash1,acpi=on,aia=aplic-imsic,accel=kvm \
        -blockdev node-name=pflash0,driver=file,read-only=on,filename="./RISCV_VIRT_CODE.fd" \
        -blockdev node-name=pflash1,driver=file,filename="./riscv_test_VARS.fd" \
        -smp 4,sockets=2,dies=1,clusters=1,cores=2,threads=1 \
        -m 4G \
        -serial telnet:127.0.0.1:10002,server,nowait \
        -kernel /boot/vmlinuz-6.6.103+ \
        -initrd /boot/initramfs-6.6.103+.img \
        -append "root=UUID=fce3cee6-e5eb-4694-85f3-48a369464c19 earlycon=sbi console=tty0 console=ttyS0 selinux=0 cgroup_disable=files apparmor=0" \
        -drive file="/rvck/openEuler-24.03-LTS-riscv64.qcow2",format=qcow2,id=hd0,if=none \
        -device virtio-blk-device,drive=hd0,bootindex=1 \
        -object rng-random,filename=/dev/urandom,id=rng0 \
        -device virtio-rng-device,rng=rng0 \
        -device virtio-net-pci,netdev=net1 \
        -netdev tap,id=net1,ifname=vnet1,script=no,downscript=no \
        -cpu host \
        -device qemu-xhci \
        -usb -device usb-kbd \
        -device usb-tablet \
        -chardev socket,id=qmp,path=/var/lib/libvirt/qemu/riscv-test,server=on,wait=off \
        -mon mode=control,chardev=qmp
```

登陆虚拟机查看cpuinfo信息：
```
Welcome to 6.6.103+

System information as of time:  Sat Apr 20 02:29:06 PM UTC 2024

System load:    1.49
Memory used:    1.9%
Swap used:      0.0%
Usage On:       5%
Users online:   1

[root@localhost ~]# 
[root@localhost ~]# 
[root@localhost ~]# cat /proc/cpuinfo 
processor       : 0
hart            : 0
isa             : rv64imafdc_zicbom_zicboz_ziccrse_zicntr_zicond_zicsr_zifencei_zihintntl_zihintpause_zihpm_zimop_zabha_zacas_zawrs_zfa_zfh_zfhmin_zca_zcb_zcd_zba_zbb_zbc_zbkb_zbkc_zbkx_zbs_zknd_zkne_zknh_zkr_zkt_zksed_zksh_ztso_zvbb_zvbc_zvfh_zvfhmin_zvkb_zvkg_zvkned_zvknha_zvknhb_zvksed_zvksh_zvkt_smnpm_smstateen_ssaia_sstc_svadu_svinval_svnapot_svpbmt_svvptc
mmu             : sv57
mvendorid       : 0x0
marchid         : 0x0
mimpid          : 0x0
```

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