Add an empty line to match AOSP

Bug: 170771377
Test: make
Change-Id: I1ec8caca20de9c3c190869229fd2c746900838c3
diff --git a/radio/1.6/types.hal b/radio/1.6/types.hal
index 2cba915..556d8a3 100644
--- a/radio/1.6/types.hal
+++ b/radio/1.6/types.hal
@@ -22,6 +22,7 @@
 import @1.4::DataConnActiveStatus;
 import @1.4::PdpProtocolType;
 import @1.5::LinkAddress;
+
 import android.hidl.safe_union@1.0::Monostate;
 
 struct QosBandwidth {