usb: convert gadget to apex

usb/Android.bp

@@ -5,24 +5,49 @@
 
 cc_binary {
     name: "android.hardware.usb.gadget-service.rpi",
-    defaults: ["hidl_defaults"],
     relative_install_path: "hw",
-    init_rc: ["android.hardware.usb.gadget-service.rpi.rc"],
-    vintf_fragments: ["android.hardware.usb.gadget-service.rpi.xml"],
     vendor: true,
     srcs: [
-        "service.cpp",
+        "MonitorFfs.cpp",
         "UsbGadget.cpp",
+        "UsbGadgetUtils.cpp",
+        "main.cpp",
     ],
     shared_libs: [
         "android.hardware.usb.gadget-V1-ndk",
-        "libbinder_ndk",
         "libbase",
-        "libcutils",
-        "libhardware",
-        "libhidlbase",
+        "libbinder_ndk",
         "liblog",
         "libutils",
     ],
-    static_libs: ["libusbconfigfs-rpi"],
+    installable: false,
+}
+
+prebuilt_etc {
+    name: "android.hardware.usb.gadget-service.rpi.rc",
+    src: "android.hardware.usb.gadget-service.rpi.rc",
+    installable: false,
+}
+
+prebuilt_etc {
+    name: "android.hardware.usb.gadget-service.rpi.xml",
+    src: "android.hardware.usb.gadget-service.rpi.xml",
+    sub_dir: "vintf",
+    installable: false,
+}
+
+apex {
+    name: "com.android.hardware.usb.gadget.rpi4",
+    manifest: "apex_manifest.json",
+    file_contexts: "apex_file_contexts",
+    key: "com.android.hardware.key",
+    certificate: ":com.android.hardware.certificate",
+    updatable: false,
+    vendor: true,
+
+    binaries: ["android.hardware.usb.gadget-service.rpi"],
+    prebuilts: [
+        "android.hardware.usb.gadget-service.rpi.rc",
+        "android.hardware.usb.gadget-service.rpi.xml",
+    ],
 }