Create IRadio 1.6 folder, empty files and VTS framework

Bug: 158315614
Test: build
Change-Id: I5d7f7205933ea1b0e4bd70fa6ae006dacb67954f
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 3e39ab7..e86b8ac 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -346,7 +346,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.radio</name>
-        <version>1.5</version>
+        <version>1.6</version>
         <interface>
             <name>IRadio</name>
             <instance>slot1</instance>