Input: yealink - replace GFP_ATOMIC with GFP_KERNEL in usb_probe()

usb_probe() is never called in atomic context.  It calls
usb_alloc_coherent() with GFP_ATOMIC, which is not necessary.  GFP_ATOMIC
can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/yealink.c

@@ -894,12 +894,12 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	/* allocate usb buffers */
 	yld->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN,
-					   GFP_ATOMIC, &yld->irq_dma);
+					   GFP_KERNEL, &yld->irq_dma);
 	if (yld->irq_data == NULL)
 		return usb_cleanup(yld, -ENOMEM);
 
 	yld->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN,
-					   GFP_ATOMIC, &yld->ctl_dma);
+					   GFP_KERNEL, &yld->ctl_dma);
 	if (!yld->ctl_data)
 		return usb_cleanup(yld, -ENOMEM);