ahci: Add Marvell 88se91a2 device id

Add device id for Marvell 88se91a2

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index a466602..ff343c4 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -489,6 +489,8 @@
 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 on some Gigabyte */
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0),
 	  .driver_data = board_ahci_yes_fbs },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a2), 	/* 88se91a2 */
+	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3),
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),