Create platform_device.h to contain all the platform device details.

Convert everyone who uses platform_bus_type to include
linux/platform_device.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/video/gbefb.c

@@ -11,7 +11,7 @@
 
 #include <linux/config.h>
 #include <linux/delay.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/errno.h>
 #include <linux/fb.h>