V4L/DVB (11127): Kconfig: replace all occurrences of CUSTOMIZE to CUSTOMISE

There are several Kconfig items using CUSTOMIZE. Yet, most use the English
writing CUSTOMISE. This generates lots of trouble, because people sometimes type
the Kbuild item different.

Let's standardise every occurrence using the same syntax.

The changes were generated by this small shell script:

for i in `find linux -type f`; do sed s,CUSTOMIZE,CUSTOMISE,g $i >/tmp/a && mv /tmp/a $i; done

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>