arm926ejs: cache: use __weak

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/arch/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c
index e86c2ed..8d7873c 100644
--- a/arch/arm/cpu/arm926ejs/cache.c
+++ b/arch/arm/cpu/arm926ejs/cache.c
@@ -99,7 +99,4 @@
 /*
  * Stub implementations for l2 cache operations
  */
-void __l2_cache_disable(void) {}
-
-void l2_cache_disable(void)
-	__attribute__((weak, alias("__l2_cache_disable")));
+__weak void l2_cache_disable(void) {}