ata: merge the header of ata_piix driver

move the sata.h from include/ to drivers/block/ata_piix.h

Signed-off-by: Dave Liu <daveliu@freescale.com>
diff --git a/drivers/block/ata_piix.c b/drivers/block/ata_piix.c
index 806ec1a..9ba6918 100644
--- a/drivers/block/ata_piix.c
+++ b/drivers/block/ata_piix.c
@@ -41,7 +41,7 @@
 
 #define SATA_DECL
 #define DRV_DECL		/*For file specific declarations */
-#include <sata.h>
+#include "ata_piix.h"
 
 /*Macros realted to PCI*/
 #define PCI_SATA_BUS	0x00