tty: mcf: MCF54418 has 10 UARTS

commit 7c92a8bd53f24d50c8cf4aba53bb75505b382fed upstream.

Most of the colfires have up to 5 UARTs but MCF54418 has up-to 10 !
Change the maximum value authorized.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>
Cc: stable <stable@kernel.org>
Fixes: 2545cf6e ("m68knommu: allow 4 coldfire serial ports")
Link: https://lore.kernel.org/r/20240620-upstream-uart-v1-1-a9d0d95fb19e@yoseli.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 0929fbe8194db19bfeed22f8c7f9b24da9f08bb9)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>