PCI: Replace unnecessary UTF-8 in Kconfig

The CONFIG_PCI_P2PDMA Kconfig help text contains a Cyrillic small "Dze"
(ѕ).  When menuconfig renders it, it looks like "Enable ~U drivers" instead
of "Enables drivers".

Replace it by a plain "s" so the help text is displayed correctly by
menuconfig.

Uwe Kleine-König <u.kleine-koenig@pengutronix.de> later posted the same
patch at
https://lore.kernel.org/r/20231006150209.87666-1-u.kleine-koenig@pengutronix.de

Link: https://lore.kernel.org/r/1658301723-111283-1-git-send-email-liusong@linux.alibaba.com


Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Liu Song <liusong@linux.alibaba.com>
[bhelgaas: commit log, add Uwe's report]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>