Extractors: Enable building static libraries for all extractors

Current make files builds only shared libraries for extractors
Enable building static libraries for MediaTesting

Test: builds

Bug: 144965408

Change-Id: I4f05cfed60ac19b21aaeab396895b7b94eedee12
diff --git a/media/extractors/mp4/Android.bp b/media/extractors/mp4/Android.bp
index 1b308aa..d9f11fc 100644
--- a/media/extractors/mp4/Android.bp
+++ b/media/extractors/mp4/Android.bp
@@ -35,7 +35,7 @@
     compile_multilib: "first",
 }
 
-cc_library_shared {
+cc_library {
 
 
     name: "libmp4extractor",