usb: musb: fix spelling mistake: "periperal" -> "peripheral"

There is a spelling mistake in a dev_err error message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Bin Liu <b-liu@ti.com>
Link: https://lore.kernel.org/r/20200117093124.97965-1-colin.king@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/musb/musb_core.c

@@ -540,7 +540,7 @@ int musb_set_peripheral(struct musb *musb)
 				   devctl & MUSB_DEVCTL_BDEVICE, 5000,
 				   1000000);
 	if (error) {
-		dev_err(musb->controller, "%s: could not set periperal: %02x\n",
+		dev_err(musb->controller, "%s: could not set peripheral: %02x\n",
 			__func__, devctl);
 
 		return error;