ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed

They were getting this implicitly by an include of module.h
from device.h -- but we are going to clean that up and break
that include chain, so include export.h explicitly now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 19ba770..72a9770 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -37,6 +37,7 @@
 #include <linux/kernel.h>
 #include <linux/blkdev.h>
 #include <linux/spinlock.h>
+#include <linux/export.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_cmnd.h>