Add TW_IGNORE_MT_POSITION_0 touch flag

This fixes touch on the a11 when fastboot booting the image. We
are also adding event logging for ABS_MT_POSITION data which we
should have been logging before but for some reason we did not.

Change-Id: I1b38c31c716efdcbe48db4faa5d0cef97c91c58e
diff --git a/minuitwrp/Android.mk b/minuitwrp/Android.mk
index cf1eb5a..c4380aa 100644
--- a/minuitwrp/Android.mk
+++ b/minuitwrp/Android.mk
@@ -85,6 +85,10 @@
 LOCAL_CFLAGS += -DTW_IGNORE_MAJOR_AXIS_0
 endif
 
+ifeq ($(TW_IGNORE_MT_POSITION_0), true)
+LOCAL_CFLAGS += -DTW_IGNORE_MT_POSITION_0
+endif
+
 ifneq ($(TW_INPUT_BLACKLIST),)
   LOCAL_CFLAGS += -DTW_INPUT_BLACKLIST=$(TW_INPUT_BLACKLIST)
 endif