bnxt_en: Set backplane link modes correctly for ethtool

Use the return value from bnxt_get_media() to determine the port and
link modes.  bnxt_get_media() returns the proper BNXT_MEDIA_KR when
the PHY is backplane.  This will correct the ethtool settings for
backplane devices.

Fixes: 5d4e1bf ("bnxt_en: extend media types to supported and autoneg modes")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Shravya KN <shravya.k-n@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: Shravya KN

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -2837,19 +2837,24 @@ static int bnxt_get_link_ksettings(struct net_device *dev,
 	}
 
 	base->port = PORT_NONE;
-	if (link_info->media_type == PORT_PHY_QCFG_RESP_MEDIA_TYPE_TP) {
+	if (media == BNXT_MEDIA_TP) {
 		base->port = PORT_TP;
 		linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT,
 				 lk_ksettings->link_modes.supported);
 		linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT,
 				 lk_ksettings->link_modes.advertising);
+	} else if (media == BNXT_MEDIA_KR) {
+		linkmode_set_bit(ETHTOOL_LINK_MODE_Backplane_BIT,
+				 lk_ksettings->link_modes.supported);
+		linkmode_set_bit(ETHTOOL_LINK_MODE_Backplane_BIT,
+				 lk_ksettings->link_modes.advertising);
 	} else {
 		linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
 				 lk_ksettings->link_modes.supported);
 		linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
 				 lk_ksettings->link_modes.advertising);
 
-		if (link_info->media_type == PORT_PHY_QCFG_RESP_MEDIA_TYPE_DAC)
+		if (media == BNXT_MEDIA_CR)
 			base->port = PORT_DA;
 		else
 			base->port = PORT_FIBRE;