Add non-treble IOMXStore interface

Test: Compiles
Bug: 37657124
Change-Id: If1c800ff0560357c6d0d380a83e7e77f621f93da
diff --git a/media/libmedia/Android.bp b/media/libmedia/Android.bp
index 043c84a..c07a6cc 100644
--- a/media/libmedia/Android.bp
+++ b/media/libmedia/Android.bp
@@ -34,6 +34,7 @@
         "IMediaCodecList.cpp",
         "IMediaCodecService.cpp",
         "IOMX.cpp",
+        "IOMXStore.cpp",
         "MediaCodecBuffer.cpp",
         "MediaCodecInfo.cpp",
         "MediaDefs.cpp",