wifi: T6095: incorrect country-code "uk" it's actually "gb"

All valid country codes can be retrieved from [1] and extracted which resulted
in the completion helper list of this commit.

1: https://git.kernel.org/pub/scm/linux/kernel/git/wens/wireless-regdb.git/tree/db.txt
(cherry picked from commit 45cd735f89a4b6c7419a26d2800d832c9da9f735)