detachables: Add in definition of VbExDisplayMenu()

BUG=b:35585623
BRANCH=None
TEST=None
CQ-DEPEND=CL:457838

Change-Id: I549ae2dee6ad2e857782a7e931662c69038bf373
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/457863
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
diff --git a/src/vboot/callbacks/display.c b/src/vboot/callbacks/display.c
index 034ebf7..d1eda48 100644
--- a/src/vboot/callbacks/display.c
+++ b/src/vboot/callbacks/display.c
@@ -131,6 +131,12 @@
 	return VBERROR_SUCCESS;
 }
 
+VbError_t VbExDisplayMenu(uint32_t screen_type, uint32_t locale,
+			  uint32_t selected_index, uint32_t redraw_base)
+{
+	return vboot_draw_ui(screen_type, locale, selected_index, redraw_base);
+}
+
 VbError_t VbExDisplayImage(uint32_t x, uint32_t y,
 			   void *buffer, uint32_t buffersize)
 {