graphics: allow IAllocator 2.0 and IMapper to 2.1

Allows IAllocator 2.0 and IMapper 2.1 so that Cuttlefish can advertise
API level 30 for R before 4.0 is implemented.

Bug: b/136016160
Test: Compiles and boots
Change-Id: I6d8ebc7013a2887521358b1ba73a2def14c20b9a
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 1e3f743..2a4b94e 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -204,6 +204,8 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.allocator</name>
+        <!-- TODO(b/136016160): deprecating 2.0. New devices should not use this -->
+        <version>2.0</version>
         <version>3.0</version>
         <version>4.0</version>
         <interface>
@@ -221,6 +223,8 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.mapper</name>
+        <!-- TODO(b/136016160): deprecating 2.1. New devices should not use this -->
+        <version>2.1</version>
         <version>3.0</version>
         <version>4.0</version>
         <interface>