Rename generic_system_image to aosp_shared_system_image

To avoid confusion with the GSI, rename the generic_system_image to
aosp_shared_system_image.

Bug: 378572528
Test: TH
Change-Id: I99c38dd2fbf94ecec628713b1b4cad8a77a4af75
diff --git a/target/product/generic/Android.bp b/target/product/generic/Android.bp
index ea49af4..b1c3def 100644
--- a/target/product/generic/Android.bp
+++ b/target/product/generic/Android.bp
@@ -885,7 +885,7 @@
 }
 
 android_system_image {
-    name: "generic_system_image",
+    name: "aosp_shared_system_image",
     defaults: ["system_image_defaults"],
     dirs: android_rootdirs,
     symlinks: android_symlinks,