rockchip: Add core Soc start-up code for rv1108

RV1108 is embedded with an ARM Cortex-A7 single core and a DSP core
from Rockchip. It is designed for varies application scenario such
as car DVR, sports DV, secure camera and UAV camera.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-rockchip/rv1108/rv1108.c b/arch/arm/mach-rockchip/rv1108/rv1108.c
new file mode 100644
index 0000000..868cdd5
--- /dev/null
+++ b/arch/arm/mach-rockchip/rv1108/rv1108.c
@@ -0,0 +1,15 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+	/* Enable D-cache. I-cache is already enabled in start.S */
+	dcache_enable();
+}
+#endif