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/char/sonypi.c b/drivers/char/sonypi.c
index f86c155..d05067d 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -48,6 +48,7 @@
 #include <linux/dmi.h>
 #include <linux/err.h>
 #include <linux/kfifo.h>
+#include <linux/platform_device.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>