Revert "Only allow system to write to existing input nodes."

This reverts commit 344e929e6d8cc2925e55d7f72262002fcc181f52.

Bug: 35301292
Change-Id: Ib6805c986c0aa88d14652de59ad4602b1cce8b56
diff --git a/rootdir/ueventd.rc b/rootdir/ueventd.rc
index 3b64f6d..0633a68 100644
--- a/rootdir/ueventd.rc
+++ b/rootdir/ueventd.rc
@@ -46,7 +46,7 @@
 /dev/tty0                 0660   root       system
 /dev/graphics/*           0660   root       graphics
 /dev/msm_hw3dm            0660   system     graphics
-/dev/input/*              0640   system     input
+/dev/input/*              0660   root       input
 /dev/eac                  0660   root       audio
 /dev/cam                  0660   root       camera
 /dev/pmem                 0660   system     graphics