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>

drivers/ata/pata_platform.c

@@ -52,7 +52,7 @@ static struct scsi_host_template pata_platform_sht = {
 
 static struct ata_port_operations pata_platform_port_ops = {
 	.inherits		= &ata_sff_port_ops,
-	.data_xfer		= ata_data_xfer_noirq,
+	.data_xfer		= ata_sff_data_xfer_noirq,
 	.cable_detect		= ata_cable_unknown,
 	.set_mode		= pata_platform_set_mode,
 	.port_start		= ATA_OP_NULL,
@@ -176,7 +176,7 @@ int __devinit __pata_platform_probe(struct device *dev,
 		      (unsigned long long)ctl_res->start);
 
 	/* activate */
-	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
+	return ata_host_activate(host, irq, irq ? ata_sff_interrupt : NULL,
 				 irq_flags, &pata_platform_sht);
 }
 EXPORT_SYMBOL_GPL(__pata_platform_probe);