trezorhal: fix missing rx_buffer

micropython/firmware/main.c

@@ -40,6 +40,7 @@ int usb_init_all(void) {
         .ep_out = 0x01,
         .subclass = 0,
         .protocol = 0,
+        .rx_buffer = rx_buffer,
         .max_packet_len = sizeof(rx_buffer),
         .polling_interval = 1,
         .report_desc_len = 34,

micropython/trezorhal/usb_hid-impl.h

@@ -18,7 +18,8 @@ int usb_hid_add(const usb_hid_info_t *info) {
     if ((info->iface_num < usb_config_desc->bNumInterfaces) ||
         (info->iface_num >= USBD_MAX_NUM_INTERFACES) ||
         ((info->ep_in & 0x80) == 0) ||
-        ((info->ep_out & 0x80) != 0)) {
+        ((info->ep_out & 0x80) != 0) ||
+        (info->rx_buffer == NULL)) {
 
         return 1; // Invalid configuration values
     }