libata: move ata_pci_default_filter() out of CONFIG_PCI

ata_pci_default_filter() doesn't really have anything to do with PCI.
It's generally applicable to BMDMA controllers.  Move it out of
CONFIG_PCI.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 840ae6d..ebdd46b 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -2117,6 +2117,16 @@
 	ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD;
 }
 
+unsigned long ata_pci_default_filter(struct ata_device *adev, unsigned long xfer_mask)
+{
+	/* Filter out DMA modes if the device has been configured by
+	   the BIOS as PIO only */
+
+	if (adev->link->ap->ioaddr.bmdma_addr == NULL)
+		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+	return xfer_mask;
+}
+
 /**
  *	ata_bmdma_setup - Set up PCI IDE BMDMA transaction
  *	@qc: Info associated with this ATA transaction.
@@ -2335,16 +2345,6 @@
 	return 0;
 }
 
-unsigned long ata_pci_default_filter(struct ata_device *adev, unsigned long xfer_mask)
-{
-	/* Filter out DMA modes if the device has been configured by
-	   the BIOS as PIO only */
-
-	if (adev->link->ap->ioaddr.bmdma_addr == NULL)
-		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
-	return xfer_mask;
-}
-
 /**
  *	ata_pci_init_bmdma - acquire PCI BMDMA resources and init ATA host
  *	@host: target ATA host
@@ -2725,6 +2725,7 @@
 EXPORT_SYMBOL_GPL(ata_bmdma_port_ops);
 EXPORT_SYMBOL_GPL(ata_qc_prep);
 EXPORT_SYMBOL_GPL(ata_dumb_qc_prep);
+EXPORT_SYMBOL_GPL(ata_pci_default_filter);
 EXPORT_SYMBOL_GPL(ata_std_dev_select);
 EXPORT_SYMBOL_GPL(ata_check_status);
 EXPORT_SYMBOL_GPL(ata_altstatus);
@@ -2760,7 +2761,6 @@
 EXPORT_SYMBOL_GPL(ata_bus_reset);
 #ifdef CONFIG_PCI
 EXPORT_SYMBOL_GPL(ata_pci_clear_simplex);
-EXPORT_SYMBOL_GPL(ata_pci_default_filter);
 EXPORT_SYMBOL_GPL(ata_pci_init_bmdma);
 EXPORT_SYMBOL_GPL(ata_pci_init_sff_host);
 EXPORT_SYMBOL_GPL(ata_pci_prepare_sff_host);