ARM: tegra: Use standard cache enable for 64-bit

On 64-bit SoCs the I-cache isn't enabled in early code, so the default
cache enable functions for 64-bit ARM can be used.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/board.c b/arch/arm/mach-tegra/board.c
index a880a87..f113041 100644
--- a/arch/arm/mach-tegra/board.c
+++ b/arch/arm/mach-tegra/board.c
@@ -198,7 +198,7 @@
 	setup_uarts(uart_ids);
 }
 
-#ifndef CONFIG_SYS_DCACHE_OFF
+#if !defined(CONFIG_SYS_DCACHE_OFF) && !defined(CONFIG_ARM64)
 void enable_caches(void)
 {
 	/* Enable D-cache. I-cache is already enabled in start.S */