arm/mx2: use per-SOC nand device

The previous commit introduced one nand device per SoC.  Use this
directly instead of the compatibility macro that will break for
multi-SoC kernels.  And while at it remove the compatibility macro now
that all in-tree users are fixed.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
diff --git a/arch/arm/mach-mx2/mach-pcm038.c b/arch/arm/mach-mx2/mach-pcm038.c
index e055d9dd..2290195 100644
--- a/arch/arm/mach-mx2/mach-pcm038.c
+++ b/arch/arm/mach-mx2/mach-pcm038.c
@@ -289,7 +289,7 @@
 	mxc_register_device(&mxc_uart_device2, &uart_pdata[2]);
 
 	mxc_gpio_mode(PE16_AF_OWIRE);
-	mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
+	mxc_register_device(&imx27_nand_device, &pcm038_nand_board_info);
 
 	/* only the i2c master 1 is used on this CPU card */
 	i2c_register_board_info(1, pcm038_i2c_devices,