Static link libjsoncpp in libprocessgroup
am: b562e68503

Change-Id: I4e15c02dacba1b3a8e7074bdf785a3d2a3a66502
diff --git a/libprocessgroup/Android.bp b/libprocessgroup/Android.bp
index 78a02e5..0207a75 100644
--- a/libprocessgroup/Android.bp
+++ b/libprocessgroup/Android.bp
@@ -32,6 +32,8 @@
     shared_libs: [
         "libbase",
         "libcgrouprc",
+    ],
+    static_libs: [
         "libjsoncpp",
     ],
     // for cutils/android_filesystem_config.h