arm64: Add Broadcom iProc family support

This patch adds support to Broadcom's iProc family of arm64 based SoCs
in the arm64 Kconfig and defconfig files
Signed-off-by: NRay Jui <rjui@broadcom.com>
Reviewed-by: NScott Branden <sbranden@broadcom.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

arch/arm64/Kconfig.platforms

 menu "Platform selection"
 
+config ARCH_BCM_IPROC
+	bool "Broadcom iProc SoC Family"
+	help
+	  This enables support for Broadcom iProc based SoCs
+
 config ARCH_EXYNOS
 	bool
 	help

arch/arm64/configs/defconfig

@@ -31,6 +31,7 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
+CONFIG_ARCH_BCM_IPROC=y
 CONFIG_ARCH_EXYNOS7=y
 CONFIG_ARCH_FSL_LS2085A=y
 CONFIG_ARCH_HISI=y