libata: Support for an ATA PASS-THROUGH(32) command.

SAT-4(SCSI/ATA Translation) supports for an ata pass-thru(32).
This patch will allow to translate an ata pass-thru(32) SCSI cmd
to an ATA cmd.

Signed-off-by: Minwoo Im <dn3108@gmail.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

include/scsi/scsi_proto.h

@@ -162,6 +162,7 @@
 #define VERIFY_32	      0x0a
 #define WRITE_32	      0x0b
 #define WRITE_SAME_32	      0x0d
+#define ATA_32		      0x1ff0
 
 /* Values for T10/04-262r7 */
 #define	ATA_16		      0x85	/* 16-byte pass-thru */