greybus: svc: SVC is part of greybus core

Its an essential part of greybus core and shouldn't be present as a
separate module. Make it part of greybus.ko module.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c
index 75b3337..8a5a9b7 100644
--- a/drivers/staging/greybus/svc.c
+++ b/drivers/staging/greybus/svc.c
@@ -239,5 +239,4 @@
 	.connection_exit	= gb_svc_connection_exit,
 	.request_recv		= gb_svc_request_recv,
 };
-
-gb_protocol_driver(&svc_protocol);
+gb_builtin_protocol_driver(svc_protocol);