am33xx: Fix fetching of mmc1 bootmode from bootrom for AM33XX

U-boot should not ignore getting the bootmode passed on from the bootrom.
With this, U-boot SPL knows it was loaded from MMC1 and use this info to
read full U-boot from MMC1 as well.

Cc: pprakash@ti.com
Cc: trini@ti.com
Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>

arch/arm/cpu/armv7/omap-common/lowlevel_init.S

@@ -27,6 +27,7 @@
  */
 
 #include <asm/arch/omap.h>
+#include <asm/arch/spl.h>
 #include <linux/linkage.h>
 
 ENTRY(save_boot_params)
@@ -59,9 +60,9 @@ ENTRY(save_boot_params)
 	strb	r2, [r3, #BOOT_DEVICE_OFFSET]	@ spl_boot_device <- r1
 
 	/* boot mode is passed only for devices that can raw/fat mode */
-	cmp	r2, #2
+	cmp	r2, #BOOT_DEVICE_XIP
 	blt	2f
-	cmp	r2, #7
+	cmp	r2, #BOOT_DEVICE_MMC2
 	bgt	2f
 	/* Store the boot mode (raw/FAT) in omap_bootmode */
 	ldr	r2, [r0, #DEV_DESC_PTR_OFFSET]	@ get the device descriptor ptr

arch/arm/include/asm/arch-am33xx/spl.h

@@ -23,6 +23,7 @@
 #ifndef	_ASM_ARCH_SPL_H_
 #define	_ASM_SPL_H_
 
+#define BOOT_DEVICE_XIP       	2
 #define BOOT_DEVICE_NAND	5
 #define BOOT_DEVICE_MMC1	8
 #define BOOT_DEVICE_MMC2	9	/* eMMC or daughter card */