sh64: Fix fs.h removal from mm.h regressions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh64/kernel/process.c b/arch/sh64/kernel/process.c
index 1b89c9d..ceb9458 100644
--- a/arch/sh64/kernel/process.c
+++ b/arch/sh64/kernel/process.c
@@ -21,6 +21,7 @@
  * This file handles the architecture-dependent parts of process handling..
  */
 #include <linux/mm.h>
+#include <linux/fs.h>
 #include <linux/ptrace.h>
 #include <linux/reboot.h>
 #include <linux/init.h>