iwlwifi: rs: disable MIMO only if allowed in configuration

Fix bug where MIMO is disabled for low latency TX on P2P VIF
regardless of configuration. Make it dependent on
IWL_MVM_RS_DISABLE_P2P_MIMO compilation option. Change configuration
so that MIMO will be disabled only in SDIO platforms.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c
index 19a7926..5ae9c8a 100644
--- a/drivers/net/wireless/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/rs.c
@@ -177,7 +177,8 @@
 
 	mvmsta = iwl_mvm_sta_from_mac80211(sta);
 	mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
-	if (iwl_mvm_vif_low_latency(mvmvif) && mvmsta->vif->p2p)
+	if (IWL_MVM_RS_DISABLE_P2P_MIMO &&
+	    iwl_mvm_vif_low_latency(mvmvif) && mvmsta->vif->p2p)
 		return false;
 
 	if (mvm->nvm_data->sku_cap_mimo_disabled)