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>
diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c
index 4f4ba9b..125929c 100644
--- a/drivers/firmware/dell_rbu.c
+++ b/drivers/firmware/dell_rbu.c
@@ -41,7 +41,7 @@
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/blkdev.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/spinlock.h>
 #include <linux/moduleparam.h>
 #include <linux/firmware.h>