slimport: Modify to support slimport-to-VGA and slimport-to-DP dongles

Change-Id: I4bbe996351d50bfa2a4073987c97db37a4ed3484
diff --git a/include/linux/slimport.h b/include/linux/slimport.h
index 757586a..f55fd2c 100644
--- a/include/linux/slimport.h
+++ b/include/linux/slimport.h
@@ -46,10 +46,20 @@
 
 #ifdef CONFIG_SLIMPORT_ANX7808
 bool slimport_is_connected(void);
+unchar sp_get_link_bw(void);
+void sp_set_link_bw(unchar link_bw);
 #else
 static inline bool slimport_is_connected(void)
 {
 	return false;
 }
+static inline unchar sp_get_link_bw(void)
+{
+	return 0;
+}
+static inline void sp_set_link_bw(unchar link_bw)
+{
+	return;
+}
 #endif
 #endif