rockchip: rk3328: add boot_devices mapping to support 'same-as-spl'

The driver need a mapping to get the dts node by boot srouce ID.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3328/rk3328.c b/arch/arm/mach-rockchip/rk3328/rk3328.c
index 1cf829d..222a8d3 100644
--- a/arch/arm/mach-rockchip/rk3328/rk3328.c
+++ b/arch/arm/mach-rockchip/rk3328/rk3328.c
@@ -4,12 +4,18 @@
  */
 
 #include <common.h>
+#include <asm/arch-rockchip/bootrom.h>
 #include <asm/arch-rockchip/hardware.h>
 #include <asm/armv8/mmu.h>
 #include <asm/io.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
+	[BROM_BOOTSOURCE_EMMC] = "rksdmmc@ff520000",
+	[BROM_BOOTSOURCE_SD] = "rksdmmc@ff500000",
+};
+
 static struct mm_region rk3328_mem_map[] = {
 	{
 		.virt = 0x0UL,