Commonize pixelstats uevent sepolicies into pixel-specific sepolicy folder

allow pixelstats_vendor fwk_stats_service:service_manager find;

allow pixelstats_vendor sysfs_scsi_devices_0000:file rw_file_perms;

r_dir_file(pixelstats_vendor, sysfs_batteryinfo)

# UeventListener

allow pixelstats_vendor self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl;

# wlc

allow pixelstats_vendor sysfs_wlc:dir search;