mmc: mxcmmc: remove cpu_is_xxx by using platform_device_id

It changes the driver to use platform_device_id rather than cpu_is_xxx
to determine the controller type, and updates the platform code
accordingly.

As the result, mach/hardware.h inclusion gets removed from the driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: linux-mmc@vger.kernel.org
diff --git a/arch/arm/mach-imx/mach-pcm038.c b/arch/arm/mach-imx/mach-pcm038.c
index 4a52340..8bf95f5 100644
--- a/arch/arm/mach-imx/mach-pcm038.c
+++ b/arch/arm/mach-imx/mach-pcm038.c
@@ -212,7 +212,7 @@
 
 static struct regulator_consumer_supply sdhc1_consumers[] = {
 	{
-		.dev_name = "mxc-mmc.1",
+		.dev_name = "imx21-mmc.1",
 		.supply	= "sdhc_vcc",
 	},
 };