iwlwifi: mvm: support new PHY_SKU nvm section for family 8000 B0

Starting from family 8000 B0 step the radio_cfg parameters
and the get_sku parameters moved from SW section to PHY_SKU section.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>