sh: Add support for cacheline poking through debugfs.

A simple debugging aid for easier visibility of the respective
cachelines.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/Makefile b/arch/sh/mm/Makefile
index da37d86..3ffd7f6 100644
--- a/arch/sh/mm/Makefile
+++ b/arch/sh/mm/Makefile
@@ -17,6 +17,10 @@
 
 obj-y			+= $(mmu-y)
 
+ifdef CONFIG_DEBUG_FS
+obj-$(CONFIG_CPU_SH4)		+= cache-debugfs.o
+endif
+
 ifdef CONFIG_MMU
 obj-$(CONFIG_CPU_SH3)		+= tlb-sh3.o
 obj-$(CONFIG_CPU_SH4)		+= tlb-sh4.o pg-sh4.o