treewide: Replace Maximumm with Maximum in Kconfig symbol description

Replace Maximumm with Maximum in Kconfig symbol description, fix a typo.
No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Michal Simek <michal.simek@amd.com>
3 files changed