ARM: config: enable hi3xxx in multi_v7_defconfig

Enable ARCH_HI3xxx in multi_v7_defconfig.
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>

arch/arm/configs/multi_v7_defconfig

@@ -9,6 +9,7 @@ CONFIG_ARCH_BCM=y
 CONFIG_ARCH_BCM_MOBILE=y
 CONFIG_GPIO_PCA953X=y
 CONFIG_ARCH_HIGHBANK=y
+CONFIG_ARCH_HI3xxx=y
 CONFIG_ARCH_KEYSTONE=y
 CONFIG_ARCH_MXC=y
 CONFIG_MACH_IMX51_DT=y