[PATCH] libata-ncq: add NCQ related ATA/libata constants and macros

Add NCQ related ATA/libata constants and macros.

Signed-off-by: Tejun Heo <htejun@gmail.com>
diff --git a/include/linux/libata.h b/include/linux/libata.h
index db17723..7c9e280 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -125,6 +125,7 @@
 	ATA_DFLAG_LBA		= (1 << 0), /* device supports LBA */
 	ATA_DFLAG_LBA48		= (1 << 1), /* device supports LBA48 */
 	ATA_DFLAG_CDB_INTR	= (1 << 2), /* device asserts INTRQ when ready for CDB */
+	ATA_DFLAG_NCQ		= (1 << 3), /* device supports NCQ */
 	ATA_DFLAG_CFG_MASK	= (1 << 8) - 1,
 
 	ATA_DFLAG_PIO		= (1 << 8), /* device currently in PIO mode */
@@ -150,6 +151,7 @@
 	ATA_FLAG_IRQ_MASK	= (1 << 9), /* Mask IRQ in PIO xfers */
 	ATA_FLAG_PIO_POLLING	= (1 << 10), /* use polling PIO if LLD
 					      * doesn't handle PIO interrupts */
+	ATA_FLAG_NCQ		= (1 << 11), /* host supports NCQ */
 
 	ATA_FLAG_DEBUGMSG	= (1 << 14),
 	ATA_FLAG_FLUSH_PORT_TASK = (1 << 15), /* flush port task */