Vibration: allow BoardConfig to disable vibration for a device.

Change-Id: Ibd2f67391ce6d7774498839829e0de9391508781
diff --git a/Android.mk b/Android.mk
old mode 100644
new mode 100755
index 4036473..9b91235
--- a/Android.mk
+++ b/Android.mk
@@ -293,6 +293,9 @@
 ifeq ($(TW_NO_EXFAT_FUSE), true)
     LOCAL_CFLAGS += -DTW_NO_EXFAT_FUSE
 endif
+ifeq ($(TW_NO_HAPTICS), true)
+    LOCAL_CFLAGS += -DTW_NO_HAPTICS
+endif
 ifeq ($(TW_INCLUDE_JB_CRYPTO), true)
     TW_INCLUDE_CRYPTO := true
 endif