extcon: qcom-spmi-misc: don't use kernel-doc marker for comment

Do not use "/**" for non-kernel-doc comments. This prevents a warning
from scripts/kernel-doc:

warning: expecting prototype for extcon(). Prototype was for USB_ID_DEBOUNCE_MS() instead

Link: https://lore.kernel.org/lkml/20231205231204.1130-1-rdunlap@infradead.org/Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/extcon/extcon-qcom-spmi-misc.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * extcon-qcom-spmi-misc.c - Qualcomm USB extcon driver to support USB ID
  *			and VBUS detection based on extcon-usb-gpio.c.
  *