wifi: iwlwifi: mvm: use iwl_mvm_is_vendor_in_approved_list()

We have this helper now instead of open-coding the check for
the dmi_tas_approved_list, so use it even here. It was added
for debugfs use, but it's better to be consistent.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230614123446.f3741f5cdef4.I5e0bf522189dc595ee38d05e93994211d32ec0f4@changeid


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