[ncm] Support setting MAC address

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/net/ncm.c

 		goto err_set_ntb_input_size;
 	}
 
+	/* Set MAC address */
+	if ( ( rc = usb_control ( usb, NCM_SET_NET_ADDRESS, 0,
+				  ncm->usbnet.comms, netdev->ll_addr,
+				  netdev->ll_protocol->ll_addr_len ) ) != 0 ) {
+		DBGC ( ncm, "NCM %p could not set MAC address: %s\n",
+		       ncm, strerror ( rc ) );
+		/* Ignore error and continue */
+	}
+
 	/* Open USB network device */
 	if ( ( rc = usbnet_open ( &ncm->usbnet ) ) != 0 ) {
 		DBGC ( ncm, "NCM %p could not open: %s\n",

src/drivers/net/ncm.h

 	uint16_t max;
 } __attribute__ (( packed ));
 
+/** Set MAC address */
+#define NCM_SET_NET_ADDRESS						\
+	( USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE |		\
+	  USB_REQUEST_TYPE ( 0x82 ) )
+
 /** Set NTB input size */
 #define NCM_SET_NTB_INPUT_SIZE						\
 	( USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE |		\