libmediadrm: Updated to build both static and shared library

Test: Build libmediadrm
Bug: 174736377

Change-Id: Iaa6cd313eb6d828b8040e8cbcae3e78e8662e0d1
diff --git a/drm/libmediadrm/Android.bp b/drm/libmediadrm/Android.bp
index 1700a95..55a32ae 100644
--- a/drm/libmediadrm/Android.bp
+++ b/drm/libmediadrm/Android.bp
@@ -11,7 +11,7 @@
 
 }
 
-cc_library_shared {
+cc_library {
     name: "libmediadrm",
 
     srcs: [