scsi: hisi_sas: fix HBA SAS addr endianness for v2 hw

The endianness for the SAS address in the TX_ID_DWORD registers is set
incorrectly.  We see errors like this in the boot log:

[    7.583284] sas: target proto 0x0 at 50000d1108e7923f:0x1f not handled

This is due to the host SAS addr not matching the PHY SAS addr in the
expander host-attached phy discovery responses.

To fix, we byte swap the SAS addr from BE to LE (which is the endianness
of the SAS controller).
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hisi_sas/hisi_sas_v2_hw.c

@@ -562,13 +562,13 @@ static void config_id_frame_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
 	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD0,
 			__swab32(identify_buffer[0]));
 	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD1,
-			identify_buffer[2]);
+			__swab32(identify_buffer[1]));
 	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD2,
-			identify_buffer[1]);
+			__swab32(identify_buffer[2]));
 	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD3,
-			identify_buffer[4]);
+			__swab32(identify_buffer[3]));
 	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD4,
-			identify_buffer[3]);
+			__swab32(identify_buffer[4]));
 	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD5,
 			__swab32(identify_buffer[5]));
 }