MAINTAINERS: Add myself as maintainer for hikey

This patch adds myself as maintainer for the hikey
U-Boot port.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 383a4ff..27eb8e5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -103,6 +103,12 @@
 F:	arch/arm/include/asm/arch-vf610/
 F:	arch/arm/include/asm/imx-common/
 
+ARM HISILICON
+M:	Peter Griffin <peter.griffin@linaro.org>
+S:	Maintained
+F:	arch/arm/cpu/armv8/hisilicon
+F:	arm/include/asm/arch-hi6220/
+
 ARM MARVELL KIRKWOOD ARMADA-XP ARMADA-38X
 M:	Prafulla Wadaskar <prafulla@marvell.com>
 M:	Luka Perkov <luka.perkov@sartura.hr>