ARM: DRA7x/AM57xx: Get rid of CONFIG_AM57XX

CONFIG_AM57XX is just an unnecessary macro that is redundant given So,
remove the same instead of spreading through out the u-boot source
code and getting in the way to maintain common code for DRA7x family.

Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-omap2/omap5/boot.c b/arch/arm/mach-omap2/omap5/boot.c
index 583becc..18750b8 100644
--- a/arch/arm/mach-omap2/omap5/boot.c
+++ b/arch/arm/mach-omap2/omap5/boot.c
@@ -12,7 +12,7 @@
 #include <spl.h>
 
 static u32 boot_devices[] = {
-#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
+#if defined(CONFIG_DRA7XX)
 	BOOT_DEVICE_MMC2,
 	BOOT_DEVICE_NAND,
 	BOOT_DEVICE_MMC1,