iwlwifi: mvm: fix EBS on single scan

EBS error detection isn't supported by all FWs, so turn it on
only if the FW advertises such support.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
index 201846d..cfc0e65 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
@@ -653,8 +653,11 @@
 };
 
 /* iwl_scan_channel_opt - CHANNEL_OPTIMIZATION_API_S
- * @flags: enum iwl_scan_channel_flgs
- * @non_ebs_ratio: how many regular scan iteration before EBS
+ * @flags: enum iwl_scan_channel_flags
+ * @non_ebs_ratio: defines the ratio of number of scan iterations where EBS is
+ *	involved.
+ *	1 - EBS is disabled.
+ *	2 - every second scan will be full scan(and so on).
  */
 struct iwl_scan_channel_opt {
 	__le16 flags;