ruby - add twrp device resolution.

Change-Id: Ie1f523197c915762acfff9c7d9c7d997799a5d53
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 8bef47b..74453e3 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -84,3 +84,7 @@
 TARGET_RECOVERY_FSTAB := device/htc/ruby/ramdisk/fstab.ruby
 BOARD_USES_MMCUTILS := true
 BOARD_HAS_NO_SELECT_BUTTON := true
+
+# TWRP Recovery Settings
+DEVICE_RESOLUTION = 540x960
+