bmpblk: Add sarien board

Add basic config for sarien board.

BUG=b:117520356
TEST=manual: emerge-sarien bmpblk

Change-Id: I4367713a861299f4eca219c6a50594f51244bfa6
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1327281
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
diff --git a/images/boards.yaml b/images/boards.yaml
index 319d0fe..15879ce 100644
--- a/images/boards.yaml
+++ b/images/boards.yaml
@@ -319,3 +319,9 @@
   screen:   [1920, 1080]
   hi_res:   [en]
   text_colors:  4
+
+sarien:
+  # 1920x1080, boots recovery image on USB ports.
+  screen:   [1920, 1080]
+  sdcard:   False
+  hi_res:   [en]