media modules get more descriptive *.rc filenames

instead of generic "init.rc"
Include the sdk-specific versions (*.32rc) that change
from writepid to task_profiles for cpu allocation profiles.

Bug: 226947753
Bug: 191283136
Test: build, boot, examine produced artifacts
Change-Id: I4c77675fd4f667594e410efa8dd5ca6ce2c47308
diff --git a/apex/mediatranscoding.rc b/apex/mediatranscoding.rc
index ae9f8ba..6e453be 100644
--- a/apex/mediatranscoding.rc
+++ b/apex/mediatranscoding.rc
@@ -1,3 +1,7 @@
+##  for SDK releases 29..31
+##  where writepid has not yet been replaced by task_profiles
+##
+#
 # media.transcoding service is defined on com.android.media apex which goes back
 # to API29, but we only want it started on API31+ devices. So we declare it as
 # "disabled" and start it explicitly on boot.