ueventd: Add permissions for /dev/msm_mp3

Change-Id: If94c9fac6f8cdecf2964db8cbadd35308d7607ed
init: Fix default IO scheduler

Only set noop while bootanimation is running, after that switch to row

Change-Id: I108596afa1b4ab89293d0a0c73dec8dc32901950
init: Clear splash screen a bit later

Showing a blank screen for a long time confuses the users

Change-Id: I95912f7948329d4b2271555a1f0ccef8863e531c
init: Require root for dmesg access

Fixes CTS failure & potential security issues

Change-Id: I8c50265a853da3a2edcf434233d890f71ba8589b