Create frameworks/base/telephony/common for common non-mainline telephony code.

And move mms util code to the new folder.

Test: basic sanity
Bug: 140763963
Change-Id: I0d92ed3fca1fc186484ea8d3c5d17b6e332e7d22
diff --git a/Android.bp b/Android.bp
index 77f4d11..594126f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -162,6 +162,14 @@
 }
 
 filegroup {
+    name: "framework-telephony-common-sources",
+    srcs: [
+        "telephony/common/**/*.java",
+    ],
+    path: "telephony/common",
+}
+
+filegroup {
     name: "framework-wifi-sources",
     srcs: [
         "wifi/java/**/*.java",
@@ -189,6 +197,7 @@
         ":framework-rs-sources",
         ":framework-sax-sources",
         ":framework-telecomm-sources",
+        ":framework-telephony-common-sources",
         ":framework-telephony-sources",
         ":framework-wifi-sources",
         ":PacProcessor-aidl-sources",
@@ -814,6 +823,7 @@
     "opengl/java",
     "sax/java",
     "telecomm/java",
+    "telephony/common",
     "telephony/java",
     "wifi/java",
     "lowpan/java",