Update linker configuration for microdroid

Update configuration of microdroid to use common properties of
filesystem instead of systemimage specific property.

Bug: 324995772
Test: N/A
Change-Id: I5845ba27a974c6e7e7489f3b42ab64539b3f3750
diff --git a/build/microdroid/Android.bp b/build/microdroid/Android.bp
index d5d8108..d9e39f0 100644
--- a/build/microdroid/Android.bp
+++ b/build/microdroid/Android.bp
@@ -139,7 +139,10 @@
             ],
         },
     },
-    linker_config_src: "linker.config.json",
+    linkerconfig: {
+        gen_linker_config: true,
+        linker_config_srcs: ["linker.config.json"],
+    },
     base_dir: "system",
     dirs: microdroid_rootdirs + select(release_flag("RELEASE_AVF_ENABLE_DICE_CHANGES"), {
         true: ["microdroid_resources"],