sh: cache: Change cache API to defines as U-Boot

A chache API of SH is developped by reference in linux kernel.
And API was the same as the linux kernel.
This patch change cache API to defines as U-Boot.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/sh/cpu/sh4/cpu.c b/arch/sh/cpu/sh4/cpu.c
index 9fae614..91133a3 100644
--- a/arch/sh/cpu/sh4/cpu.c
+++ b/arch/sh/cpu/sh4/cpu.c
@@ -41,7 +41,7 @@
 
 void flush_cache (unsigned long addr, unsigned long size)
 {
-	dcache_invalid_range( addr , addr + size );
+	invalidate_dcache_range(addr , addr + size);
 }
 
 void icache_enable (void)