GNSS AIDL Version 2 is also allowed in Android U

Bug: 253319784
Test: atest VtsHalGnssTargetTest
Change-Id: I666260d7ed2cc0eb385e1badd2b952d7c6f538f6
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index a907f20..96b8c5b 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -260,7 +260,7 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.gnss</name>
-        <version>3</version>
+        <version>2-3</version>
         <interface>
             <name>IGnss</name>
             <instance>default</instance>