rockchip: rk3308: Sort imply statements alphabetically

Sort imply statements under ROCKCHIP_RK3308 alphabetically and remove
the config SPL_SERIAL statement from soc Kconfig file, it is already
implyed in arch Kconfig.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 4f22d9b..4a77f18 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -161,13 +161,13 @@
 	select SPL_ATF_NO_PLATFORM_PARAM
 	select SPL_LOAD_FIT
 	imply ROCKCHIP_COMMON_BOARD
-	imply SPL_ROCKCHIP_COMMON_BOARD
 	imply SPL_CLK
-	imply SPL_REGMAP
-	imply SPL_SYSCON
 	imply SPL_RAM
-	imply SPL_SERIAL
+	imply SPL_REGMAP
+	imply SPL_ROCKCHIP_COMMON_BOARD
 	imply SPL_SEPARATE_BSS
+	imply SPL_SERIAL
+	imply SPL_SYSCON
 	help
 	  The Rockchip RK3308 is a ARM-based Soc which embedded with quad
 	  Cortex-A35 and highly integrated audio interfaces.