Add stack dump from drmserver process to bugreports

This would be helpful tracking down ANR issues in drmserver

o related-to-bug: 7132419

Change-Id: I7eceaa0c29af26bd0092110be6bddf8f4c063545
diff --git a/cmds/dumpstate/utils.c b/cmds/dumpstate/utils.c
index da00846..cfd7483 100644
--- a/cmds/dumpstate/utils.c
+++ b/cmds/dumpstate/utils.c
@@ -41,6 +41,7 @@
 
 /* list of native processes to include in the native dumps */
 static const char* native_processes_to_dump[] = {
+        "/system/bin/drmserver",
         "/system/bin/mediaserver",
         "/system/bin/sdcard",
         "/system/bin/surfaceflinger",