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/eisa/virtual_root.c

@@ -9,7 +9,7 @@
 
 #include <linux/config.h>
 #include <linux/kernel.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/eisa.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>