libprocessgroup: Convert libprocessgroup_util to static library

To avoid duplicate symbol linker error and prep for addition of json
descriptor reading and activation functions in upcoming changes.

Bug: 349105928
Test: m
Change-Id: I5cd663d6007ef330b872b8cf8ed046ee68b6d736
diff --git a/libprocessgroup/setup/Android.bp b/libprocessgroup/setup/Android.bp
index 76f0a11..1a4ad01 100644
--- a/libprocessgroup/setup/Android.bp
+++ b/libprocessgroup/setup/Android.bp
@@ -34,10 +34,10 @@
     ],
     static_libs: [
         "libcgrouprc_format",
+        "libprocessgroup_util",
     ],
     header_libs: [
         "libprocessgroup_headers",
-        "libprocessgroup_util",
     ],
     export_header_lib_headers: [
         "libprocessgroup_headers",