ARM: zynq: load u-boot.img whether CONFIG_OF_SEPARATE is defined or not

Since commit ad1ecd2063 ("fdt: Build a U-Boot binary without device
tree"), u-boot-dtb.img is identical to u-boot.img, so SPL can always
load u-boot.img whether CONFIG_OF_SEPARATE is defined or not.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

include/configs/zynq-common.h

@@ -315,11 +315,7 @@
 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION     1
 #define CONFIG_SPL_LIBDISK_SUPPORT
 #define CONFIG_SPL_FAT_SUPPORT
-#ifdef CONFIG_OF_SEPARATE
-# define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME     "u-boot-dtb.img"
-#else
-# define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME     "u-boot.img"
-#endif
+#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME     "u-boot.img"
 #endif
 
 /* Disable dcache for SPL just for sure */