rockchip: rk3568: add AArch32 build support

SPL and TPL is still in AArch64 mode.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I4768903d1dbdd06359eb196607b67fb128dea644

arch/arm/mach-rockchip/Kconfig

@@ -383,16 +383,15 @@ endif
 
 config ROCKCHIP_RK3568
 	bool "Support Rockchip RK3568"
-	select ARM64
+	select ARM64 if !ARM64_BOOT_AARCH32
 	select ARM_SMCCC
-	select GICV3
-	select SPL
-	select SUPPORT_TPL
-	select SUPPORT_SPL
+	select GICV3 if !ARM64_BOOT_AARCH32
+	select SUPPORT_TPL if !ARM64_BOOT_AARCH32
+	select SUPPORT_SPL if !ARM64_BOOT_AARCH32
 	select TPL_TINY_FRAMEWORK if TPL
 	select DEBUG_UART_BOARD_INIT
-	imply TPL
-	imply SPL
+	imply TPL if !ARM64_BOOT_AARCH32
+	imply SPL if !ARM64_BOOT_AARCH32
 	imply TPL_SERIAL_SUPPORT
 	help
 	  The Rockchip RK3568 is a ARM-based SoC with a quad-core Cortex-A55.

arch/arm/mach-rockchip/rk3568/rk3568.c

@@ -458,6 +458,9 @@ enum {
 	UART5_IO_SEL_M1,
 };
 
+#ifdef CONFIG_ARM64
+#include <asm/armv8/mmu.h>
+
 static struct mm_region rk3568_mem_map[] = {
 	{
 		.virt = 0x0UL,
@@ -486,6 +489,7 @@ static struct mm_region rk3568_mem_map[] = {
 };
 
 struct mm_region *mem_map = rk3568_mem_map;
+#endif
 
 void board_debug_uart_init(void)
 {