wifi: iwlwifi: parse VLP AP not allowed nvm channel flag

OEMs need the option to enable/disable VLP AP.
Add NVM flag to control VLP AP configuration.

Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250609211928.a433cb0ea0f3.Ifc6d7ba96d200dca0e3d38ec8d71625fd81a10ae@changeid