ARM: rockchip: enable the AMBA bus

This is needed to access the pl330 dma controllers on Rockchip SoCs.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Tested-by: NKever Yang <kever.yang@rock-chips.com>

arch/arm/mach-rockchip/Kconfig

@@ -4,6 +4,7 @@ config ARCH_ROCKCHIP
 	select PINCTRL_ROCKCHIP
 	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_REQUIRE_GPIOLIB
+	select ARM_AMBA
 	select ARM_GIC
 	select CACHE_L2X0
 	select HAVE_ARM_ARCH_TIMER