pvmfw: Use linker_scripts property

Fixes the issue that the script was not considered a dependency of
the "pvmfw" target.

Test: m pvmfw
Change-Id: Ic1e617e2a899973d65e129b34b83c67967dbc04e
diff --git a/pvmfw/Android.bp b/pvmfw/Android.bp
index 7385288..3b5df7f 100644
--- a/pvmfw/Android.bp
+++ b/pvmfw/Android.bp
@@ -38,9 +38,7 @@
     nocrt: true,
     system_shared_libs: ["libc"],
     stl: "none",
-    ldflags: [
-        "-Tpackages/modules/Virtualization/pvmfw/image.ld",
-    ],
+    linker_scripts: ["image.ld"],
     enabled: false,
     target: {
         android_arm64: {