rockchip: rv1108: Migrate to use common board file

Use common board file for board_init() and board_late_init(),
for Rockchip SoCs have very similar process.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 4b21179..e337d06 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -203,6 +203,7 @@
 config ROCKCHIP_RV1108
 	bool "Support Rockchip RV1108"
 	select CPU_V7A
+	imply ROCKCHIP_COMMON_BOARD
 	help
 	  The Rockchip RV1108 is a ARM-based SoC with a single-core Cortex-A7
 	  and a DSP.