[SCSI] scsi_debug: add XDWRITEREAD_10 support

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 0f55f5b..8225157 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -102,6 +102,7 @@
 #define READ_TOC              0x43
 #define LOG_SELECT            0x4c
 #define LOG_SENSE             0x4d
+#define XDWRITEREAD_10        0x53
 #define MODE_SELECT_10        0x55
 #define RESERVE_10            0x56
 #define RELEASE_10            0x57