ueventd.rc: set all ondemand/interactive perms to 646
PowerHALs were spamming "Permission denied" errors on GNexus and T-mo GS3 (though the files returning this varied)
Attempt to fix this universally by setting 646 permissions on all ondemand/interactive perms (no more complaints from logcat here)
Signed-off-by: Luis Cruz <ljc2491@gmail.com>

Change-Id: Ia9cd77feaf22e81f7172089677321b04cf6899ac