MAINTAINERS: Update HiSilicon LPC BUS Driver maintainer

Add Jay Fang as the maintainer of the HiSilicon LPC BUS Driver, replacing
John Garry.

Signed-off-by: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/20221028105434.1661264-1-f.fangjian@huawei.com

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>