!3187 [OLK-6.6] Add support for Zhaoxin I2C controller

Merge Pull Request from: @leoliu-oc 
 
Zhaoxin I2C Linux driver support all bidirectional bus protocols speed
specified in the I2C Specification 7.0. The speed mode listed in the
followed table.

### Issue
https://gitee.com/openeuler/kernel/issues/I8WZ8C

### Test
Pass: dirver load & test OK 
 
Link:https://gitee.com/openeuler/kernel/pulls/3187

 

Reviewed-by: Liu Chao <liuchao173@huawei.com>
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>