linux_spi: reorder includes for linux <4.14

This works around a missing header in spidev.h present in older
versions of Linux. Patch is ported from:
https://git.buildroot.net/buildroot/tree/package/flashrom/0001-spi.patch



Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: David Hendricks <david.hendricks@gmail.com>
Change-Id: Ieab60f59bc63aca0dc4867f31699dab4167da05b
Reviewed-on: https://review.coreboot.org/c/flashrom/+/35830


Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

linux_spi.c

@@ -26,12 +26,17 @@
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <linux/types.h>
-#include <linux/spi/spidev.h>
-#include <linux/ioctl.h>
 #include "flash.h"
 #include "chipdrivers.h"
 #include "programmer.h"
 #include "spi.h"
+/*
+ * Linux versions prior to v4.14-rc7 may need linux/ioctl.h included here due
+ * to missing from linux/spi/spidev.h. This was fixed in the following commit:
+ * a2b4a79b88b2 spi: uapi: spidev: add missing ioctl header
+ */
+#include <linux/ioctl.h>
+#include <linux/spi/spidev.h>
 
 /* Devices known to work with this module (FIXME: export as struct dev_entry):
  * Beagle Bone Black