ARM: multi_v7_defconfig: Switch sunxi RSB driver from module to built-in

The sunxi RSB bus is used for peripherals like voltage regulators and
real-time clocks which should be available early in the boot process.
As a module, the driver will not be available until the root fs has been
mounted, so build the driver into the kernel.
Signed-off-by: Rask Ingemann Lambertsen <rask@formelder.dk>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/configs/multi_v7_defconfig

@@ -195,7 +195,7 @@ CONFIG_DMA_CMA=y
 CONFIG_CMA_SIZE_MBYTES=64
 CONFIG_OMAP_OCP2SCP=y
 CONFIG_SIMPLE_PM_BUS=y
-CONFIG_SUNXI_RSB=m
+CONFIG_SUNXI_RSB=y
 CONFIG_MTD=y
 CONFIG_MTD_CMDLINE_PARTS=y
 CONFIG_MTD_BLOCK=y