iwlwifi: mvm: call iwl_trans_suspend/resume

call the appropriate iwl_trans_suspend/resume ops
on iwl_mvm_suspend/resume calls.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>