lib: fdt: fix indent of #ifdef..#endif conditional

Match the depth of indentation between #ifdef and #endif
for better readability.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index a954051..48667ef 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1167,7 +1167,7 @@
 #  else
 	/* FDT is at end of image */
 	gd->fdt_blob = (ulong *)&_end;
-#endif
+#  endif
 # elif defined(CONFIG_OF_HOSTFILE)
 	if (sandbox_read_fdt_from_file()) {
 		puts("Failed to read control FDT\n");