video: imxfb: 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>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: linux-fbdev@vger.kernel.org

arch/arm/mach-imx/devices/devices-common.h

@@ -108,6 +108,7 @@ struct platform_device *__init imx_add_imxdi_rtc(
 
 #include <linux/platform_data/video-imxfb.h>
 struct imx_imx_fb_data {
+	const char *devid;
 	resource_size_t iobase;
 	resource_size_t iosize;
 	resource_size_t irq;

arch/arm/mach-imx/devices/platform-imx-fb.c

@@ -10,8 +10,9 @@
 #include <mach/hardware.h>
 #include "devices-common.h"
 
-#define imx_imx_fb_data_entry_single(soc, _size)			\
+#define imx_imx_fb_data_entry_single(soc, _devid, _size)		\
 	{								\
+		.devid = _devid,					\
 		.iobase = soc ## _LCDC_BASE_ADDR,			\
 		.iosize = _size,					\
 		.irq = soc ## _INT_LCDC,				\
@@ -19,22 +20,22 @@
 
 #ifdef CONFIG_SOC_IMX1
 const struct imx_imx_fb_data imx1_imx_fb_data __initconst =
-	imx_imx_fb_data_entry_single(MX1, SZ_4K);
+	imx_imx_fb_data_entry_single(MX1, "imx1-fb", SZ_4K);
 #endif /* ifdef CONFIG_SOC_IMX1 */
 
 #ifdef CONFIG_SOC_IMX21
 const struct imx_imx_fb_data imx21_imx_fb_data __initconst =
-	imx_imx_fb_data_entry_single(MX21, SZ_4K);
+	imx_imx_fb_data_entry_single(MX21, "imx21-fb", SZ_4K);
 #endif /* ifdef CONFIG_SOC_IMX21 */
 
 #ifdef CONFIG_SOC_IMX25
 const struct imx_imx_fb_data imx25_imx_fb_data __initconst =
-	imx_imx_fb_data_entry_single(MX25, SZ_16K);
+	imx_imx_fb_data_entry_single(MX25, "imx21-fb", SZ_16K);
 #endif /* ifdef CONFIG_SOC_IMX25 */
 
 #ifdef CONFIG_SOC_IMX27
 const struct imx_imx_fb_data imx27_imx_fb_data __initconst =
-	imx_imx_fb_data_entry_single(MX27, SZ_4K);
+	imx_imx_fb_data_entry_single(MX27, "imx21-fb", SZ_4K);
 #endif /* ifdef CONFIG_SOC_IMX27 */
 
 struct platform_device *__init imx_add_imx_fb(