camera_device: remove type and add typealias

camera_device didn't really offer much in terms of control considering
that most domains that need camera_device, also need video_device and
vice versa.

Thus, drop camera_device from the policy and add a temporary typealias.

Change-Id: I144c0bb49a9a68ab1bdf636c64abe656f3e677b4
Signed-off-by: William Roberts <william.c.roberts@intel.com>
diff --git a/file_contexts b/file_contexts
index a1fa804..1cd5fba 100644
--- a/file_contexts
+++ b/file_contexts
@@ -60,7 +60,7 @@
 /dev/block/ram[0-9]*	u:object_r:ram_device:s0
 /dev/block/zram[0-9]*	u:object_r:ram_device:s0
 /dev/bus/usb(.*)?       u:object_r:usb_device:s0
-/dev/cam		u:object_r:camera_device:s0
+/dev/cam		u:object_r:video_device:s0
 /dev/console		u:object_r:console_device:s0
 /dev/cpuctl(/.*)?	u:object_r:cpuctl_device:s0
 /dev/device-mapper	u:object_r:dm_device:s0