Update BoardConfig.mk

Signed-off-by: Samuel Kendall <kinguser981@gmail.com>

BoardConfig.mk

@@ -131,6 +131,7 @@ TW_EXCLUDE_DEFAULT_USB_INIT := true
 TW_HAS_MTP := true
 TW_FORCE_KEYMASTER_VER := true
 OF_DEFAULT_KEYMASTER_VERSION := 4.1
+TW_MAX_BRIGHTNESS := 300
 TW_Y_OFFSET := 60
 TW_H_OFFSET := -60
 TW_FRAMERATE := 60