MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver

Add John Garry as maintainer for drivers/bus/hisi_lpc.c, the HiSilicon LPC
driver.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

MAINTAINERS

@@ -6386,6 +6386,13 @@ W:	http://www.hisilicon.com
 S:	Maintained
 F:	drivers/net/ethernet/hisilicon/hns3/
 
+HISILICON LPC BUS DRIVER
+M:	john.garry@huawei.com
+W:	http://www.hisilicon.com
+S:	Maintained
+F:	drivers/bus/hisi_lpc.c
+F:	Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
+
 HISILICON NETWORK SUBSYSTEM DRIVER
 M:	Yisen Zhuang <yisen.zhuang@huawei.com>
 M:	Salil Mehta <salil.mehta@huawei.com>