rockchip: enable boot0-hook for all Rockchip SoCs

Rockchip SoCs bootrom design is like this:
- First 2KB or 4KB internal memory is for bootrom stack and heap;
- Then the first 4-byte suppose to be a TAG like 'RK33';
- The the following memory address end with '0004' is the first
  instruction load and running by bootrom;

Let's use the boot0 hook to reserve the first 4-byte tag for all
the Rockchip SoCs.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[Commit message taken from an older patch by:]
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

arch/arm/Kconfig

@@ -1130,6 +1130,7 @@ config ARCH_ROCKCHIP
 	select DM_USB if USB
 	select DM_PWM
 	select DM_REGULATOR
+	select ENABLE_ARM_SOC_BOOT0_HOOK
 	imply CMD_FASTBOOT
 	imply FASTBOOT
 	imply FAT_WRITE

arch/arm/mach-rockchip/Kconfig

@@ -74,7 +74,6 @@ config ROCKCHIP_RK3368
 	imply SPL_SEPARATE_BSS
 	imply SPL_SERIAL_SUPPORT
 	imply TPL_SERIAL_SUPPORT
-	select ENABLE_ARM_SOC_BOOT0_HOOK
 	select DEBUG_UART_BOARD_INIT
 	select SYS_NS16550
 	help
@@ -112,7 +111,6 @@ config ROCKCHIP_RK3399
 	select SPL_SEPARATE_BSS
 	select SPL_SERIAL_SUPPORT
 	select SPL_DRIVERS_MISC_SUPPORT
-	select ENABLE_ARM_SOC_BOOT0_HOOK
 	select DEBUG_UART_BOARD_INIT
 	help
 	  The Rockchip RK3399 is a ARM-based SoC with a dual-core Cortex-A72