[ARM] 5282/1: pxa: add CM-X255 support

Signed-off-by: Russ Dill <russ.dill@gmail.com>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/mtd/nand/cmx270_nand.c b/drivers/mtd/nand/cmx270_nand.c
index 9eba3f0..fa129c0 100644
--- a/drivers/mtd/nand/cmx270_nand.c
+++ b/drivers/mtd/nand/cmx270_nand.c
@@ -156,7 +156,7 @@
 	int mtd_parts_nb = 0;
 	int ret;
 
-	if (!machine_is_armcore())
+	if (!(machine_is_armcore() && cpu_is_pxa27x()))
 		return -ENODEV;
 
 	ret = gpio_request(GPIO_NAND_CS, "NAND CS");