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/pcmcia/vrc4171_card.c

@@ -24,6 +24,7 @@
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/types.h>
+#include <linux/platform_device.h>
 
 #include <asm/io.h>