qseecom: Drop world rw permissions for /dev/qseecom

Bug: 7151762
Change-Id: I74c24ef4892e1c28b00b8154a6994e03bd351905

Conflicts:
	ueventd.mako.rc
diff --git a/ueventd.mako.rc b/ueventd.mako.rc
index d615f99..ad69eae 100644
--- a/ueventd.mako.rc
+++ b/ueventd.mako.rc
@@ -36,7 +36,7 @@
 /dev/gemini*              0660   system     camera
 /dev/msm_dsps             0600   system     system
 /dev/bcm2079x-i2c         0660   nfc        nfc
-/dev/qseecom              0666   system     drmrpc
+/dev/qseecom              0660   system     drmrpc
 /dev/diag                 0666   root       root
 /dev/mdm                  0660   system     radio
 /dev/ttyUSB0              0660   system     system