[HEADERS] One line per header in Kbuild files to reduce conflicts

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/scsi/Kbuild b/include/scsi/Kbuild
index 14a033d..744f850 100644
--- a/include/scsi/Kbuild
+++ b/include/scsi/Kbuild
@@ -1,2 +1,4 @@
 header-y += scsi.h
-unifdef-y := scsi_ioctl.h sg.h
+
+unifdef-y += scsi_ioctl.h
+unifdef-y += sg.h