ARM: imx: use platform ids for spi_imx devices

The driver recently learned to handle platform ids.  Make use of this
new feature.  The up side is that the driver needs less knowledge about
the spi interfaces used on different SoCs.

Acked-by: Jason Wang <jason77.wang@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/plat-mxc/devices/platform-spi_imx.c b/arch/arm/plat-mxc/devices/platform-spi_imx.c
index 412a81f..bd30d4b 100644
--- a/arch/arm/plat-mxc/devices/platform-spi_imx.c
+++ b/arch/arm/plat-mxc/devices/platform-spi_imx.c
@@ -11,6 +11,7 @@
 
 #define imx_spi_imx_data_entry_single(soc, type, _devid, _id, hwid, _size) \
 	{								\
+		.devid = _devid,					\
 		.id = _id,						\
 		.iobase = soc ## _ ## type ## hwid ## _BASE_ADDR,	\
 		.iosize = _size,					\
@@ -83,6 +84,6 @@
 		},
 	};
 
-	return imx_add_platform_device("spi_imx", data->id,
+	return imx_add_platform_device(data->devid, data->id,
 			res, ARRAY_SIZE(res), pdata, sizeof(*pdata));
 }
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index 490fe7c..32b8f36 100644
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -77,6 +77,7 @@
 
 #include <mach/spi.h>
 struct imx_spi_imx_data {
+	const char *devid;
 	int id;
 	resource_size_t iobase;
 	resource_size_t iosize;