various cmd_* files: fixed layout a little bit

Most of the files have U_BOOT_CMD on a separate line,
but a few didn't and had the first line on the same line
as U_BOOT_CMD.

This changes these files by adding a line break and a tab

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
diff --git a/common/cmd_ximg.c b/common/cmd_ximg.c
index 8a2cf83..dceb975 100644
--- a/common/cmd_ximg.c
+++ b/common/cmd_ximg.c
@@ -262,7 +262,8 @@
 	return 0;
 }
 
-U_BOOT_CMD(imxtract, 4, 1, do_imgextract,
+U_BOOT_CMD(
+	imxtract, 4, 1, do_imgextract,
 	"extract a part of a multi-image",
 	"addr part [dest]\n"
 	"    - extract <part> from legacy image at <addr> and copy to <dest>"