i2c: add support for HiSilicon I2C controller

mainline inclusion
from mainline-v5.13-rc1
commit d62fbdb9
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I42E7E


CVE: NA

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Add HiSilicon I2C controller driver for the Kunpeng SoC. It provides
the access to the i2c busses, which connects to the eeprom, rtc, etc.

The driver works with IRQ mode, and supports basic I2C features and 10bit
address. The DMA is not supported.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Conflicts:
	MAINTAINERS
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Reviewed-by: Sheng Feng &lt; <fengsheng5@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>