ARM: cache: declare set_section_dcache

We declare the set_section_dcache function globally in the cache header, for
later use by e.g. machine specific code.

Signed-off-by: Vincent Stehlé <v-stehle <at> ti.com>
Cc: Tom Rini <trini <at> ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h
index eef6a5a..416d2c8 100644
--- a/arch/arm/include/asm/cache.h
+++ b/arch/arm/include/asm/cache.h
@@ -41,6 +41,7 @@
 
 void l2_cache_enable(void);
 void l2_cache_disable(void);
+void set_section_dcache(int section, enum dcache_option option);
 
 /*
  * The current upper bound for ARM L1 data cache line sizes is 64 bytes.  We