Support "suspension" of a video encoder in "surface-input" mode.

i.e. feed no more input frames to the encoder while suspended.

Change-Id: I51391e18c1517548e869f8ddece19f4af37e78f9
diff --git a/include/media/IOMX.h b/include/media/IOMX.h
index 0b1d1e4..38f9d11 100644
--- a/include/media/IOMX.h
+++ b/include/media/IOMX.h
@@ -130,6 +130,16 @@
             node_id node,
             const char *parameter_name,
             OMX_INDEXTYPE *index) = 0;
+
+    enum InternalOptionType {
+        INTERNAL_OPTION_SUSPEND,  // data is a bool
+    };
+    virtual status_t setInternalOption(
+            node_id node,
+            OMX_U32 port_index,
+            InternalOptionType type,
+            const void *data,
+            size_t size) = 0;
 };
 
 struct omx_message {