phy: qualcomm: phy-qcom-usb-hs: repair non-kernel-doc comment

Fix errant use of "/**" to begin a comment although the comment
is not kernel-doc notation. Just use "/*" instead.

Fixes this kernel-doc warning:

drivers/phy/qualcomm/phy-qcom-usb-hs.c:3: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Copyright (C) 2016 Linaro Ltd

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: linux-phy@lists.infradead.org
Link: https://lore.kernel.org/r/20210723022548.25695-1-rdunlap@infradead.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>