iwlwifi: rx: use new api to get band from rx mpdu

The FW introduce new API to get the band from the rx mpdu,
use this new API.

Change-Id: I38188bc18da1615342d4e12a4a485b7c4e18b268
Signed-off-by: Tova Mussai <tova.mussai@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
4 files changed