[PATCH] fix remaining missing includes

Fix more include file problems that surfaced since I submitted the previous
fix-missing-includes.patch.  This should now allow not to include sched.h
from module.h, which is done by a followup patch.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-sh64/pgtable.h b/include/asm-sh64/pgtable.h
index 51b0581..a1906a7 100644
--- a/include/asm-sh64/pgtable.h
+++ b/include/asm-sh64/pgtable.h
@@ -24,6 +24,8 @@
 #include <linux/threads.h>
 #include <linux/config.h>
 
+struct vm_area_struct;
+
 extern void paging_init(void);
 
 /* We provide our own get_unmapped_area to avoid cache synonym issue */