sh64: Fix up reworked cache op build.

This gets the build fixed up for the sh64 cache enabled case.
Disabling still needs further abstraction for independent I/D-cache
disabling.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index 63c1329..e9415d3 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -277,7 +277,11 @@
 
 void __init cpu_cache_init(void)
 {
-	unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE);
+	unsigned int cache_disabled = 0;
+
+#ifdef CCR
+	cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE);
+#endif
 
 	compute_alias(&boot_cpu_data.icache);
 	compute_alias(&boot_cpu_data.dcache);