rockchip: Migrate to use BOOTROM_SUPPORT driver

SPL bootrom support is a boot device just like mmc and etc,
use formal boot device instead of jump to bootrom directly.
Enable the Kconfig by default if ROCKCHIP_BACK_TO_BROM is enabled.

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 ac86532..2b4e3c7 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -34,8 +34,8 @@
 	select SPL_RAM
 	select SPL_DRIVERS_MISC_SUPPORT
 	select SPL_ROCKCHIP_EARLYRETURN_TO_BROM
+	select SPL_ROCKCHIP_BACK_TO_BROM
 	select BOARD_LATE_INIT
-	select ROCKCHIP_BROM_HELPER
 	help
 	  The Rockchip RK3188 is a ARM-based SoC with a quad-core Cortex-A9
 	  including NEON and GPU, 512KB L2 cache, Mali-400 graphics, two
@@ -59,9 +59,7 @@
 	select SPL_DRIVERS_MISC_SUPPORT
 	imply SPL_SERIAL_SUPPORT
 	imply TPL_SERIAL_SUPPORT
-	imply TPL_BOOTROM_SUPPORT
 	imply TPL_ROCKCHIP_COMMON_BOARD
-	select ROCKCHIP_BROM_HELPER
 	select TPL_LIBCOMMON_SUPPORT
 	select TPL_LIBGENERIC_SUPPORT
 	help
@@ -77,7 +75,6 @@
 	select SUPPORT_SPL
 	select SPL
 	select SUPPORT_TPL
-	imply TPL_BOOTROM_SUPPORT
 	imply TPL_CLK
 	imply TPL_DM
 	imply TPL_DRIVERS_MISC_SUPPORT
@@ -169,12 +166,10 @@
 	select DM_PMIC
 	select DM_REGULATOR_FIXED
 	select BOARD_LATE_INIT
-	select ROCKCHIP_BROM_HELPER
 	imply TPL_SERIAL_SUPPORT
 	imply TPL_LIBCOMMON_SUPPORT
 	imply TPL_LIBGENERIC_SUPPORT
 	imply TPL_SYS_MALLOC_SIMPLE
-	imply TPL_BOOTROM_SUPPORT
 	imply TPL_DRIVERS_MISC_SUPPORT
 	imply TPL_OF_CONTROL
 	imply TPL_DM
@@ -211,6 +206,7 @@
 	bool "SPL returns to bootrom"
 	default y if ROCKCHIP_RK3036
 	select ROCKCHIP_BROM_HELPER
+	select SPL_BOOTROM_SUPPORT
 	depends on SPL
 	help
 	  Rockchip SoCs have ability to load SPL & U-Boot binary. If enabled,
@@ -221,6 +217,7 @@
 	bool "TPL returns to bootrom"
 	default y
 	select ROCKCHIP_BROM_HELPER
+	select TPL_BOOTROM_SUPPORT
 	depends on TPL
 	help
 	  Rockchip SoCs have ability to load SPL & U-Boot binary. If enabled,