[libata] checkpatch-inspired cleanups

Tackle the relatively sane complaints of checkpatch --file.

The vast majority is indentation and whitespace changes, the rest are

* #include fixes
* printk KERN_xxx prefix addition
* BSS/initializer cleanups

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c
index 9f9f7b3..b6026bc 100644
--- a/drivers/ata/sata_sx4.c
+++ b/drivers/ata/sata_sx4.c
@@ -62,13 +62,13 @@
 		submit ATA packet to hardware
 		hardware executes ATA WRITE command, w/ data in DIMM
 		hardware raises interrupt
-	
+
 	and each READ looks like this:
 
 		submit ATA packet to hardware
 		hardware executes ATA READ command, w/ data in DIMM
 		hardware raises interrupt
-	
+
 		submit HDMA packet to hardware
 		hardware copies data from DIMM to system memory
 		hardware raises interrupt