usb: device_next: remove workaround for the UDC enqueue bug

Remove workaround for the UDC enqueue bug in experimental
CDC ACM implementation.

Signed-off-by: Johann Fischer <[email protected]>

Author: jfischer-no

subsys/usb/device_next/class/usbd_cdc_acm.c

@@ -20,11 +20,9 @@ LOG_MODULE_REGISTER(usbd_cdc_acm, CONFIG_USBD_CDC_ACM_LOG_LEVEL);
 
 /*
  * FIXME: buffer count per device.
- * FIXME: Due to a bug in UDC transfer processing the number of buffers
- * is temporarily set to 1.
  */
 NET_BUF_POOL_FIXED_DEFINE(cdc_acm_ep_pool,
-			  1, 512,
+			  2, 512,
 			  sizeof(struct udc_buf_info), NULL);
 
 #define CDC_ACM_DEFAULT_LINECODING	{sys_cpu_to_le32(115200), 0, 0, 8}