[MTD] [NOR] Test devtype, not definition in flash_probe(), drivers/mtd/devices/lart.c

drivers/mtd/devices/lart.c:119:#define FLASH_DEVICE_16mbit_BOTTOM 0x88f488f4
As was, unless "manufacturer != FLASH_MANUFACTURER" this returned true

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>