minuitwrp: use a whitelist for the input device instead of a hardcoded ignore list

 * use a whitelist for the input device to listen on, every other will be ignored

Change-Id: I1296a45ec3d5ca0bca2a9e2601b0710e2c030fde
diff --git a/minuitwrp/Android.mk b/minuitwrp/Android.mk
index 4ee59d0..2797a00 100644
--- a/minuitwrp/Android.mk
+++ b/minuitwrp/Android.mk
@@ -81,6 +81,11 @@
 ifneq ($(BOARD_USE_CUSTOM_RECOVERY_FONT),)
   LOCAL_CFLAGS += -DBOARD_USE_CUSTOM_RECOVERY_FONT=$(BOARD_USE_CUSTOM_RECOVERY_FONT)
 endif
+
+ifneq ($(TW_WHITELIST_INPUT),)
+  LOCAL_CFLAGS += -DWHITELIST_INPUT=$(TW_WHITELIST_INPUT)
+endif
+
 LOCAL_SHARED_LIBRARIES += libz libc libcutils libjpeg
 LOCAL_STATIC_LIBRARIES += libpng libpixelflinger_static
 LOCAL_MODULE_TAGS := eng