wifi: nl80211: fix puncturing bitmap policy

wifi: nl80211: fix puncturing bitmap policy

commit b27f07c50a73e34eefb6b1030b235192b7ded850 upstream.

This was meant to be a u32, and while applying the patch
I tried to use policy validation for it. However, not only
did I copy/paste it to u8 instead of u32, but also used
the policy range erroneously. Fix both of these issues.

Fixes: d7c1a9a0ed18 ("wifi: nl80211: validate and configure puncturing bitmap")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>