Define vintf fragment as a module

Define vintf fragment as a module, so it can be used from multiple
soong-defined modules.

Bug: 322089980
Test: aosp_cf_x86_64_phone build succeeded
Change-Id: I817efd443e49439e4134fca8bd3fd034bbbcc3cc
Merged-In: I817efd443e49439e4134fca8bd3fd034bbbcc3cc
diff --git a/wpa_supplicant/aidl/Android.bp b/wpa_supplicant/aidl/Android.bp
index 481ad0b..6f26525 100644
--- a/wpa_supplicant/aidl/Android.bp
+++ b/wpa_supplicant/aidl/Android.bp
@@ -56,7 +56,8 @@
     ],
 }
 
-filegroup {
+vintf_fragment {
     name: "android.hardware.wifi.supplicant.xml",
-    srcs: ["android.hardware.wifi.supplicant.xml"],
+    src: "android.hardware.wifi.supplicant.xml",
+    soc_specific: true,
 }