ARC: [mm] Aliasing VIPT dcache support 4/4

Enforce congruency of userspace shared mappings

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/include/asm/cacheflush.h b/arch/arc/include/asm/cacheflush.h
index 14a0fea..9f841af 100644
--- a/arch/arc/include/asm/cacheflush.h
+++ b/arch/arc/include/asm/cacheflush.h
@@ -19,6 +19,7 @@
 #define _ASM_CACHEFLUSH_H
 
 #include <linux/mm.h>
+#include <asm/shmparam.h>
 
 /*
  * Semantically we need this because icache doesn't snoop dcache/dma.