add mediaswcodec service

Set up a new service for sw media codec services.

Bug: 111407413

Test: cts-tradefed run cts-dev --module CtsMediaTestCases --compatibility:module-arg CtsMediaTestCases:include-annotation:android.platform.test.annotations.RequiresDevice
Change-Id: Ia1c6a9ef3f0c1d84b2be8756eb1853ffa0597f8e
diff --git a/private/file_contexts b/private/file_contexts
index 3b85213..a70f61b 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -229,6 +229,7 @@
 /system/bin/mediametrics	u:object_r:mediametrics_exec:s0
 /system/bin/cameraserver	u:object_r:cameraserver_exec:s0
 /system/bin/mediaextractor	u:object_r:mediaextractor_exec:s0
+/system/bin/mediaswcodec	u:object_r:mediaswcodec_exec:s0
 /system/bin/mdnsd	u:object_r:mdnsd_exec:s0
 /system/bin/installd	u:object_r:installd_exec:s0
 /system/bin/otapreopt_chroot   u:object_r:otapreopt_chroot_exec:s0