Add GSI support for android_system_image

GSI's system.img includes system_ext and product artifacts. This patches
android_system_image module so it can include such artifacts when
building GSI.

Bug: 370351758
Test: m android_gsi
Change-Id: Id29678b1101e787e88dbedae38cdbf6d82d1cb95
diff --git a/compliance/Android.bp b/compliance/Android.bp
index 72c2f27..6662970 100644
--- a/compliance/Android.bp
+++ b/compliance/Android.bp
@@ -35,5 +35,6 @@
     partition_name: "system",
     visibility: [
         "//build/make/target/product/generic",
+        "//build/make/target/product/gsi",
     ],
 }