MAINTAINERS: Update HiSilicon GPIO Driver maintainer

Add Jay Fang as the maintainer of the HiSilicon GPIO Driver, replacing
Luo Jiaxing.

Cc: Luo Jiaxing <jiaxingluo@autox.ai>
Signed-off-by: NJay Fang <f.fangjian@huawei.com>
Acked-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: NJiaxing Luo <jiaxingluo@autox.ai>
Signed-off-by: NBartosz Golaszewski <brgl@bgdev.pl>

MAINTAINERS

@@ -9122,7 +9122,7 @@ S:	Maintained
 F:	drivers/dma/hisi_dma.c
 
 HISILICON GPIO DRIVER
-M:	Luo Jiaxing <luojiaxing@huawei.com>
+M:	Jay Fang <f.fangjian@huawei.com>
 L:	linux-gpio@vger.kernel.org
 S:	Maintained
 F:	drivers/gpio/gpio-hisi.c