wifi: iwlwifi: Add support for B step of BnJ-Fm4

Support new HW step of BnJ-Fm4 device

Signed-off-by: Golan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230305124407.bb0591c59898.If04d7a45707ba008981f8c8ea7f7f107880f146c@changeid


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