[MTD] NOR: leave Intel chips in read-array mode on suspend

During some testing with several samsung s3c24xx based
devices it was discovered that often the
cfi_cmdset_0001.c would not leave the chip in
read-array mode on suspend. this is an issue if the
same flash chip is used for the bootloader that needs
to be read on resume.
Signed-off-by: NDavid Anders <danders@amltd.com>
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/chips/cfi_cmdset_0001.c

@@ -2224,6 +2224,8 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
 		case FL_CFI_QUERY:
 		case FL_JEDEC_QUERY:
 			if (chip->oldstate == FL_READY) {
+				/* place the chip in a known state before suspend */
+				map_write(map, CMD(0xFF), cfi->chips[i].start);
 				chip->oldstate = chip->state;
 				chip->state = FL_PM_SUSPENDED;
 				/* No need to wake_up() on this state change -