Add bitops include needed for ext2 filesystem

Signed-off-by: Jonas Bonn <jonas@southpole.se>
diff --git a/arch/openrisc/include/asm/bitops.h b/arch/openrisc/include/asm/bitops.h
index a9e11ef..2c64f22 100644
--- a/arch/openrisc/include/asm/bitops.h
+++ b/arch/openrisc/include/asm/bitops.h
@@ -54,6 +54,7 @@
 
 #include <asm-generic/bitops/atomic.h>
 #include <asm-generic/bitops/non-atomic.h>
+#include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
 
 #endif /* __ASM_GENERIC_BITOPS_H */