Fix the generated getevent labels.

Some of the less-used stuff stayed behind in input.h, so we need to
parse both files.

Change-Id: Iff2b6e3fc4f5a6584169d12f16427b4f235da21a
Test: manual inspection of the generated file.
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index 23af1f9..ad8ac03 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -73,7 +73,7 @@
 
 $(LOCAL_PATH)/getevent.c: $(intermediates)/input.h-labels.h
 
-UAPI_INPUT_EVENT_CODES_H := bionic/libc/kernel/uapi/linux/input-event-codes.h
+UAPI_INPUT_EVENT_CODES_H := bionic/libc/kernel/uapi/linux/input.h bionic/libc/kernel/uapi/linux/input-event-codes.h
 INPUT_H_LABELS_H := $(intermediates)/input.h-labels.h
 $(INPUT_H_LABELS_H): PRIVATE_LOCAL_PATH := $(LOCAL_PATH)
 # The PRIVATE_CUSTOM_TOOL line uses = to evaluate the output path late.