[MIPS] Fix build error on processors that don's support copy-on-write.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/lib/iomap.c b/arch/mips/lib/iomap.c
index 7e2ced71..f4ac5bb 100644
--- a/arch/mips/lib/iomap.c
+++ b/arch/mips/lib/iomap.c
@@ -63,7 +63,7 @@
 		return ioport_map(start, len);
 	if (flags & IORESOURCE_MEM) {
 		if (flags & IORESOURCE_CACHEABLE)
-			return ioremap_cacheable_cow(start, len);
+			return ioremap_cachable(start, len);
 		return ioremap_nocache(start, len);
 	}