iwlwifi: mvm: fix WGDS table print in iwl_mvm_chub_update_mcc()

WGDS table index 0 means disabled, but we were erroneously checking
for < 0 to print that it is disabled.  Fix that and make the print
more readable by mentioning that it's either disabled or there was an
error.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211024181719.98a5572bf0f8.I6c112ca80cf427f12b2c752899d293cb6437ba5f@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/nvm.c

@@ -583,8 +583,9 @@ void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
 		return;
 
 	wgds_tbl_idx = iwl_mvm_get_sar_geo_profile(mvm);
-	if (wgds_tbl_idx < 0)
-		IWL_DEBUG_INFO(mvm, "SAR WGDS is disabled (%d)\n",
+	if (wgds_tbl_idx < 1)
+		IWL_DEBUG_INFO(mvm,
+			       "SAR WGDS is disabled or error received (%d)\n",
 			       wgds_tbl_idx);
 	else
 		IWL_DEBUG_INFO(mvm, "SAR WGDS: geo profile %d is configured\n",