[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/include/linux/ata.h b/include/linux/ata.h
index a4f373f..8263a7b 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -178,8 +178,8 @@
 	ATA_CMD_PACKET		= 0xA0,
 	ATA_CMD_VERIFY		= 0x40,
 	ATA_CMD_VERIFY_EXT	= 0x42,
- 	ATA_CMD_STANDBYNOW1	= 0xE0,
- 	ATA_CMD_IDLEIMMEDIATE	= 0xE1,
+	ATA_CMD_STANDBYNOW1	= 0xE0,
+	ATA_CMD_IDLEIMMEDIATE	= 0xE1,
 	ATA_CMD_INIT_DEV_PARAMS	= 0x91,
 	ATA_CMD_READ_NATIVE_MAX	= 0xF8,
 	ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
@@ -458,7 +458,7 @@
  *		ATA-3 introduces word 80 and accurate reporting
  *
  *	The practical impact of this is that ata_id_major_version cannot
- *	reliably report on drives below ATA3. 
+ *	reliably report on drives below ATA3.
  */
 
 static inline unsigned int ata_id_major_version(const u16 *id)