wifi: cfg80211: make read-only array centers_80mhz static const

Don't populate the read-only array lanes on the stack, instead make
it static const.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20230919095205.24949-1-colin.i.king@gmail.com


Signed-off-by: Johannes Berg <johannes.berg@intel.com>