[media] cx24120: constify static data
[media] cx24120: constify static data

Use const on the static data, as gcc may optimize better the
code. Also, would prevent that some code would override the
data there.

Signed-off-by: Mauro Carvalho Chehab <ad86ba2154032c9f55743a190faa2459a9d61d42@osg.samsung.com>
Signed-off-by: Patrick Boettcher <e5ed5156b6f9b5cfea22ed93d1184c375a5b92a6@posteo.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs