sbc: Style fixes for sbc.sym file
diff --git a/sbc/sbc.sym b/sbc/sbc.sym
index 0642a0b..c1f6919 100644
--- a/sbc/sbc.sym
+++ b/sbc/sbc.sym
@@ -15,10 +15,12 @@
 local:
 	*;
 };
+
 SBC_1.1 {
 global:
 	sbc_init_msbc;
 } SBC_1.0;
+
 SBC_1.2 {
 global:
 	sbc_init_a2dp;