add exynos tablet flag

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: Id2a5ce769af9b87d7fbdb415ff7869f593601dc3
diff --git a/exynos4/exynos4x12/liblights/Android.mk b/exynos4/exynos4x12/liblights/Android.mk
index 1884dc5..a16bab5 100644
--- a/exynos4/exynos4x12/liblights/Android.mk
+++ b/exynos4/exynos4x12/liblights/Android.mk
@@ -29,6 +29,10 @@
      LOCAL_CFLAGS += -DLED_NOTIFICATION
 endif
 
+ifeq ($(BOARD_EXYNOS4X12_TABLET),true)
+     LOCAL_CFLAGS += -DEXYNOS4X12_TABLET
+endif
+
 LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM)
 
 LOCAL_MODULE_TAGS := optional