phy: ti: tusb1210: Fix the kernel-doc warn

The comment is not kernel-doc one and starts with /**, so fix that.

drivers/phy/ti/phy-tusb1210.c:16: warning: expecting prototype for tusb1210.c(). Prototype was for TUSB1210_VENDOR_SPECIFIC2() instead
Signed-off-by: NVinod Koul <vkoul@kernel.org>
Reviewed-by: NLiam Beguin <liambeguin@gmail.com>
Link: https://lore.kernel.org/r/20211116103951.34482-6-vkoul@kernel.orgSigned-off-by: NVinod Koul <vkoul@kernel.org>

drivers/phy/ti/phy-tusb1210.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * tusb1210.c - TUSB1210 USB ULPI PHY driver
  *
  * Copyright (C) 2015 Intel Corporation