spring: do not hibernate for board rev 9-12

On board rev 9 to rev 12, hibernating actually consumes more power. Stop
hibernating for these boards.

BUG=chrome-os-partner:21107
TEST=None
BRANCH=Spring

Change-Id: I42c88a816cad076059809ecb6c7bfd8f409d6a0f
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/63573
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
index 6cfaba8..5689362 100644
--- a/board/samsung/smdk5250/smdk5250.c
+++ b/board/samsung/smdk5250/smdk5250.c
@@ -1247,7 +1247,7 @@
 	/*
 	 * Disable EC standby mode for early stage boards.
 	 */
-	if (board_get_revision() <= 8) {
+	if (board_get_revision() <= 12) {
 		debug("%s: disabling EC standby mode\n", __func__);
 		mkbp_set_hib_delay(board_get_mkbp_dev(), 0);
 	}