Use screen width 720 recovery assets.

Doing that is certainly better than no assets at all.

Change-Id: I8731e3eaec173fba8a09fe332077423909cb1304
diff --git a/BoardConfig.mk b/BoardConfig.mk
index cf1d4c8..2f1452f 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -84,6 +84,7 @@
 
 TARGET_RECOVERY_PIXEL_FORMAT := "RGBX_8888"
 TARGET_RECOVERY_UI_LIB := librecovery_ui_mako
+TARGET_RECOVERY_SCREEN_WIDTH := 720
 
 TARGET_RECOVERY_FSTAB = device/lge/mako/fstab.mako
 RECOVERY_FSTAB_VERSION = 2