drivers/ata/libata-transport.c: include linux/slab.h

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/libata-transport.c

@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/blkdev.h>
 #include <linux/spinlock.h>
+#include <linux/slab.h>
 #include <scsi/scsi_transport.h>
 #include <linux/libata.h>
 #include <linux/hdreg.h>