STOUT-FIRMWARE: Add FAFT keyboard remap GBB flag

Add a new flag, 0x100, to indicate FAFT key stroke overrides.

BUG=chrome-os-partner:16799
TEST=manual
BRANCH=stout

Change-Id: Ibf9a24842619da644a3fefdd8a77c6a51ec45db1
Original-Change-Id: I76b7f3f4c51abec5528047f690f20a09b257abc2
Signed-off-by: Marc Jones <marc.jones@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/39651
Reviewed-by: Shawn Nematbakhsh <shawnn@google.com>
Tested-by: Shawn Nematbakhsh <shawnn@google.com>
diff --git a/firmware/include/gbb_header.h b/firmware/include/gbb_header.h
index 57fb701..22948be 100644
--- a/firmware/include/gbb_header.h
+++ b/firmware/include/gbb_header.h
@@ -51,7 +51,8 @@
 #define GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK  0x00000020
 /* Allow Enter key to trigger dev->tonorm screen transition */
 #define GBB_FLAG_ENTER_TRIGGERS_TONORM    0x00000040
-
+/* Allow booting using alternate keys for FAFT servo testing */
+#define GBB_FLAG_FAFT_KEY_OVERIDE         0x00000100
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/scripts/image_signing/set_gbb_flags.sh b/scripts/image_signing/set_gbb_flags.sh
index 47f3691..e2caf2e 100755
--- a/scripts/image_signing/set_gbb_flags.sh
+++ b/scripts/image_signing/set_gbb_flags.sh
@@ -29,6 +29,7 @@
   GBB_FLAG_FORCE_DEV_BOOT_USB         0x00000010
   GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK  0x00000020
   GBB_FLAG_ENTER_TRIGGERS_TONORM      0x00000040
+  GBB_FLAG_FAFT_KEY_OVERIDE           0x00000100
 
   To get a developer-friendly device, try 0x11 (short_delay + boot_usb).
   For factory-related tests (always DEV), try 0x39.