Minor fixes to the CAIF Transport drivers Kconfig file

[ Upstream commit 0f04f8ea62ce79f5a8bb1a7c2d92513799532239 ]

Minor fixes to the CAIF Transport drivers Kconfig file:

- end sentence with period
- capitalize CAIF acronym

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: addf89774e48 ("ieee802154: Fix build error")
Signed-off-by: Sasha Levin <sashal@kernel.org>