smaug: Add gbb-flag-force-fastboot-full-cap to fmap.dts

BUG=chrome-os-partner:40196
CQ-DEPEND=CL:271610
BRANCH=None
TEST=Compiles successfully and fastboot full cap flag is set on bootimage.

Change-Id: If937844a2fc14d14ed9e548cf6fc40ab8b9cb3fd
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://chromium-review.googlesource.com/271612
Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
diff --git a/board/smaug/fmap.dts b/board/smaug/fmap.dts
index 2353ee5..ccec1f9 100644
--- a/board/smaug/fmap.dts
+++ b/board/smaug/fmap.dts
@@ -11,6 +11,7 @@
 		gbb-flag-force-dev-switch-on;
 		gbb-flag-force-dev-boot-usb;
 		gbb-flag-disable-fw-rollback-check;
+		gbb-flag-force-dev-boot-fastboot-full-cap;
 	};
 	flash@0 {
 		#address-cells = <1>;