libata: rename SFF functions

SFF functions have confusing names.  Some have sff prefix, some have
bmdma, some std, some pci and some none.  Unify the naming by...

* SFF functions which are common to both BMDMA and non-BMDMA are
  prefixed with ata_sff_.

* SFF functions which are specific to BMDMA are prefixed with
  ata_bmdma_.

* SFF functions which are specific to PCI but apply to both BMDMA and
  non-BMDMA are prefixed with ata_pci_sff_.

* SFF functions which are specific to PCI and BMDMA are prefixed with
  ata_pci_bmdma_.

* Drop generic prefixes from LLD specific routines.  For example,
  bfin_std_dev_select -> bfin_dev_select.

The following renames are noteworthy.

  ata_qc_issue_prot() -> ata_sff_qc_issue()
  ata_pci_default_filter() -> ata_bmdma_mode_filter()
  ata_dev_try_classify() -> ata_sff_dev_classify()

This rename is in preparation of separating SFF support out of libata
core layer.  This patch strictly renames functions and doesn't
introduce any behavior difference.

Signed-off-by: Tejun Heo <htejun@gmail.com>
diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c
index 46d0ce3..1186bcd 100644
--- a/drivers/ata/pata_cs5520.c
+++ b/drivers/ata/pata_cs5520.c
@@ -146,7 +146,7 @@
 
 static struct ata_port_operations cs5520_port_ops = {
 	.inherits		= &ata_bmdma_port_ops,
-	.qc_prep		= ata_dumb_qc_prep,
+	.qc_prep		= ata_sff_dumb_qc_prep,
 	.cable_detect		= ata_cable_40wire,
 	.set_piomode		= cs5520_set_piomode,
 	.set_dmamode		= cs5520_set_dmamode,
@@ -227,7 +227,7 @@
 	ioaddr->ctl_addr = iomap[1];
 	ioaddr->altstatus_addr = iomap[1];
 	ioaddr->bmdma_addr = iomap[4];
-	ata_std_ports(ioaddr);
+	ata_sff_std_ports(ioaddr);
 
 	ata_port_desc(host->ports[0],
 		      "cmd 0x%x ctl 0x%x", cmd_port[0], ctl_port[0]);
@@ -238,7 +238,7 @@
 	ioaddr->ctl_addr = iomap[3];
 	ioaddr->altstatus_addr = iomap[3];
 	ioaddr->bmdma_addr = iomap[4] + 8;
-	ata_std_ports(ioaddr);
+	ata_sff_std_ports(ioaddr);
 
 	ata_port_desc(host->ports[1],
 		      "cmd 0x%x ctl 0x%x", cmd_port[1], ctl_port[1]);
@@ -258,7 +258,7 @@
 			continue;
 
 		rc = devm_request_irq(&pdev->dev, irq[ap->port_no],
-				      ata_interrupt, 0, DRV_NAME, host);
+				      ata_sff_interrupt, 0, DRV_NAME, host);
 		if (rc)
 			return rc;