Correct SPL use of OF_EMBED

This converts 1 usage of this option to the non-SPL form, since there is
no SPL_OF_EMBED defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/board_r.c b/common/board_r.c
index fe80361..90e1219 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -155,7 +155,7 @@
 	 * The fdt_blob needs to be moved to new relocation address
 	 * incase of FDT blob is embedded with in image
 	 */
-	if (CONFIG_IS_ENABLED(OF_EMBED) && IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
+	if (IS_ENABLED(CONFIG_OF_EMBED) && IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
 		gd->fdt_blob += gd->reloc_off;
 
 #ifdef CONFIG_EFI_LOADER