Introduce security labels for 2 new device nodes.

iio: Industrial I/O subsystem
usb_accessory: accessory protocol for usb

Allow system access in both cases.

Change-Id: I02db9775ec2ddaaeda40fae6d5e56e320957b09c
Signed-off-by: Robert Craig <rpcraig@tycho.ncsc.mil>
diff --git a/file_contexts b/file_contexts
index 4e6db16..6501dfd 100644
--- a/file_contexts
+++ b/file_contexts
@@ -50,6 +50,7 @@
 /dev/fuse		u:object_r:fuse_device:s0
 /dev/graphics(/.*)?	u:object_r:graphics_device:s0
 /dev/input(/.*)		u:object_r:input_device:s0
+/dev/iio:device[0-9]+   u:object_r:iio_device:s0
 /dev/ion		u:object_r:ion_device:s0
 /dev/kmem		u:object_r:kmem_device:s0
 /dev/log(/.*)?		u:object_r:log_device:s0
@@ -105,6 +106,7 @@
 /dev/uhid		u:object_r:uhid_device:s0
 /dev/uinput		u:object_r:input_device:s0
 /dev/urandom		u:object_r:urandom_device:s0
+/dev/usb_accessory	u:object_r:usbaccessory_device:s0
 /dev/vcs[0-9a-z]*	u:object_r:vcs_device:s0
 /dev/video[0-9]*	u:object_r:video_device:s0
 /dev/watchdog		u:object_r:watchdog_device:s0