greybus: es1: fix checkpatch warning about blank lines needed

Add a blank line in apb1_log_enable_read() to make checkpatch happy.

Oh, and it makes the code more readable too...

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
diff --git a/drivers/staging/greybus/es1.c b/drivers/staging/greybus/es1.c
index a7fb4b5..225ef3f 100644
--- a/drivers/staging/greybus/es1.c
+++ b/drivers/staging/greybus/es1.c
@@ -573,6 +573,7 @@
 {
 	char tmp_buf[3];
 	int enable = apb1_log_task != NULL;
+
 	sprintf(tmp_buf, "%d\n", enable);
 	return simple_read_from_buffer(buf, count, ppos, tmp_buf, 3);
 }