add mediaswcodec to watchdog and dumpstate

bug: 130887807
test: adb bugreport and check mediaswcodec stack is there
Change-Id: I4a37e4e06c4905f435e96d8b1497e3617e688478
(cherry-picked from https://android-review.googlesource.com/c/platform/system/sepolicy/+/947830)
diff --git a/private/system_server.te b/private/system_server.te
index c05413a..e724447 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -262,8 +262,9 @@
   inputflinger
   mediadrmserver
   mediaextractor
-  mediaserver
   mediametrics
+  mediaserver
+  mediaswcodec
   sdcardd
   statsd
   surfaceflinger