sysfs_uio: declare type in core policy

(cherry picked from commit f2d07904)

/dev/uio uio_device is already declared. Accessing uio through /sys
is also common.

Bug: 26990688
Change-Id: I3db941161dae31d3b87f265708abbcd9171a2c1f

file.te

@@ -22,6 +22,7 @@ type proc_uid_cputime_removeuid, fs_type;
 type selinuxfs, fs_type, mlstrustedobject;
 type cgroup, fs_type, mlstrustedobject;
 type sysfs, fs_type, sysfs_type, mlstrustedobject;
+type sysfs_uio, sysfs_type, fs_type;
 type sysfs_writable, fs_type, sysfs_type, mlstrustedobject;
 type sysfs_batteryinfo, fs_type, sysfs_type;
 type sysfs_bluetooth_writable, fs_type, sysfs_type, mlstrustedobject;