gpu: ion: Export ion_client_create

Will enable modules to allocate memory with ion.

Signed-off-by: Johan Mossberg <johan.mossberg@stericsson.com>
[jstultz: modified patch to apply to staging directory]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion.c

@@ -688,6 +688,7 @@ struct ion_client *ion_client_create(struct ion_device *dev,
 
 	return client;
 }
+EXPORT_SYMBOL(ion_client_create);
 
 void ion_client_destroy(struct ion_client *client)
 {