Add missing includes

Fixes a warning in ieee1394_types.h and an error in include/linux/usb.h

drivers/ieee1394/ieee1394_types.h

@@ -7,6 +7,7 @@
 #include <linux/version.h>
 #include <linux/list.h>
 #include <linux/init.h>
+#include <linux/string.h>
 #include <asm/byteorder.h>
 
 

include/linux/usb.h

@@ -99,6 +99,7 @@
 #ifdef __KERNEL__
 
 #include <linux/config.h>
+#include <linux/errno.h>        /* for -ENODEV */
 #include <linux/delay.h>	/* for mdelay() */
 #include <linux/interrupt.h>	/* for in_interrupt() */
 #include <linux/list.h>		/* for struct list_head */