fs_enet: Include linux/string.h from linux/fs_enet_pd.h

It is needed for strstr().
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

include/linux/fs_enet_pd.h

@@ -16,6 +16,7 @@
 #ifndef FS_ENET_PD_H
 #define FS_ENET_PD_H
 
+#include <linux/string.h>
 #include <asm/types.h>
 
 #define FS_ENET_NAME	"fs_enet"