boot: Correct indentation in efi bootmeth

Fix a minor indentation / whitespace problem in a comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glkp@gmx.de>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/boot/bootmeth_efi.c b/boot/bootmeth_efi.c
index 56a6e47..39232eb 100644
--- a/boot/bootmeth_efi.c
+++ b/boot/bootmeth_efi.c
@@ -265,7 +265,7 @@
 		return log_msg_ret("sz", -EINVAL);
 	bflow->size = size;
 
-    /* bootfile should be setup by dhcp*/
+	/* bootfile should be setup by dhcp */
 	bootfile_name = env_get("bootfile");
 	if (!bootfile_name)
 		return log_msg_ret("bootfile_name", ret);