mailbox: bcm74110: remove unneeded semicolon

No functional modification involved.

./drivers/mailbox/bcm74110-mailbox.c:483:2-3: Unneeded semicolon.
./drivers/mailbox/bcm74110-mailbox.c:563:2-3: Unneeded semicolon.

Reported-by: Abaci Robot <[e-mail]>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=22936
Signed-off-by: Jiapeng Chong <[e-mail]>
Signed-off-by: Jassi Brar <[e-mail]>

drivers/mailbox/bcm74110-mailbox.c

···
 		break;
 	default:
 		return -EINVAL;
-	};
+	}
 
 	return bcm74110_mbox_tx_msg(chan_priv->mbox, msg);
 }
···
 	default:
 		dev_err(dev, "Invalid channel type: %d\n", type);
 		return ERR_PTR(-EINVAL);
-	};
+	}
 
 	return &cntrl->chans[type];
 }