Revert "libprocessgroup: Remove cgroup.rc file"

Revert submission 3212512

Reason for revert: Droidmonitor created revert due to b/372273614. Will be verifying through ABTD before submission.

Reverted changes: /q/submissionid:3212512

Change-Id: I37568516e973cb940f1229d52f94b8dc801da2ab
diff --git a/libprocessgroup/setup/Android.bp b/libprocessgroup/setup/Android.bp
index cc6c67c..1a4ad01 100644
--- a/libprocessgroup/setup/Android.bp
+++ b/libprocessgroup/setup/Android.bp
@@ -33,6 +33,7 @@
         "libjsoncpp",
     ],
     static_libs: [
+        "libcgrouprc_format",
         "libprocessgroup_util",
     ],
     header_libs: [