health: Add to compatibility matrix.

For now, add as optional. Once we finished implementing
it on Android T devices, make it required.

Test: pass
Bug: 177269435
Change-Id: I148b7567d8e154cb5e16ec01b547785f90c7a706
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 7fa586e..d2747f6 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -276,6 +276,15 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <!-- TODO(b/177269435): require health AIDL HAL and deprecate HIDL HAL -->
+    <hal format="aidl" optional="true">
+        <name>android.hardware.health</name>
+        <version>1</version>
+        <interface>
+            <name>IHealth</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.health.storage</name>
         <version>1</version>