Enable Composite USB HID for all F4, add PG for USB device. (#5525)

src/main/pg/usb.h

@@ -0,0 +1,31 @@
+/*
+ * This file is part of Cleanflight.
+ *
+ * Cleanflight is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Cleanflight is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "pg/pg.h"
+
+enum USB_DEV {
+    DEFAULT,
+    COMPOSITE
+};
+
+typedef struct usbDev_s {
+    uint8_t type;
+} usbDev_t;
+
+PG_DECLARE(usbDev_t, usbDevice);