Move definition of MessageQueue flavor to libfmq-base

Move the defintion of MQFlavor to libfmq to share it.

Test: atest fmq_unit_tests && m -j128
Bug: 142326204

Change-Id: Ib8427ded3f1d70d7aed96070311248ac6cb571c9
diff --git a/Android.bp b/Android.bp
index bc4e532..ff918ed 100644
--- a/Android.bp
+++ b/Android.bp
@@ -158,6 +158,13 @@
         "transport/include",
     ],
 
+    header_libs: [
+        "libfmq-base",
+    ],
+    export_header_lib_headers: [
+        "libfmq-base",
+    ],
+
     generated_sources: [
         "android.hidl.manager@1.0_genc++",
         "android.hidl.manager@1.1_genc++",