i2c: hisi: Only handle the interrupt of the driver's transfer

The controller may be shared with other port, for example the firmware.
Handle the interrupt from other sources will cause crash since some
data are not initialized. So only handle the interrupt of the driver's
transfer and discard others.

Reliability test:
The driver fails to be uninstalled during a deadlock. The data is read or written successfully.
root@localhost:/# i2ctransfer -y 0 w66@0x50 0x0 0x0 0x0+                                                                            
root@localhost:/# i2ctransfer -y 0 w2@0x50 0x0 0x0 r4096 & 
root@localhost:/# rmmod i2c_hisi                                                                                                    
rmmod: ERROR: Module i2c_hisi is in use                                                                                             
root@localhost:/# busybox devmem 0x201070a98 32 0x1                                                                              
root@localhost:/#                                                                                                                   
root@localhost:/# busybox devmem 0x201070a9c 32 0x1                                                                              
root@localhost:/# i2ctransfer -y 0 w3@0x50 0x0 0x0 0x11                                                                            
root@localhost:/#                                                                                                                   
root@localhost:/# i2ctransfer -y 0 w2@0x50 0x0 0x0 r1                                                                               
0x11                                                                                                                                
root@localhost:/# i2ctransfer -y 0  w4@0x50 0x0 0x0 0x21+                                                                           
root@localhost:/#                                                                                                                   
root@localhost:/# i2ctransfer -y 0 w2@0x50 0x0 0x0 r2                                                                               
0x21 0x22                                                                                                                           
root@localhost:/# i2ctransfer -y 0 w6@0x50 0x0 0x0 0x41+                                                                            
root@localhost:/#                                                                                                                   
root@localhost:/# i2ctransfer -y 0 w2@0x50 0x0 0x0 r4                                                                               
0x41 0x42 0x43 0x44                                                                                                                 
root@localhost:/#                                                                                                                   
root@localhost:/# i2ctransfer -y 0 w66@0x50 0x0 0x0 0x0+                                                                            
root@localhost:/# i2ctransfer -y 0 w2@0x50 0x0 0x0 r64                                                                              
0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2a 0x2b 0x2c 0x2d 0x2e 0x2f 0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x
3a 0x3b 0x3c 0x3d 0x3e 0x3f 0x0f 0x0e 0x0d 0x0c 0x0b 0x0a 0x09 0x08 0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00 0xff 0xfe 0xfd 0xfc 0xfb
 0xfa 0xf9 0xf8 0xf7 0xf6 0xf5 0xf4 0xf3 0xf2 0xf1 0xf0                                                                             
root@localhost:/#

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