OMXCodec: Re-implement requires-flush-before-shutdown quirk

Support is already there, but is not in the codec quirk reading list.
Re-implement it as required by Broadcom's OMX

Change-Id: I1beac06af8118dcf0c248b631bc8e6dbbab2c1d5
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp
index 5d6b6a7..d11381d 100644
--- a/media/libstagefright/OMXCodec.cpp
+++ b/media/libstagefright/OMXCodec.cpp
@@ -268,6 +268,10 @@
         quirks |= kRequiresAllocateBufferOnOutputPorts;
     }
     if (list->codecHasQuirk(
+                index, "requires-flush-before-shutdown")) {
+        quirks |= kRequiresFlushBeforeShutdown;
+    }
+    if (list->codecHasQuirk(
                 index, "output-buffers-are-unreadable")) {
         quirks |= kOutputBuffersAreUnreadable;
     }