rockchip: rk3328: add evb-rk3328 support

evb-rk3328 is an evb from Rockchip based on rk3328 SoC:
- 2 USB2.0 Host port;
- 1 USB3.0 Host port;
- 1 HDMI port;
- 2 10/100M eth port;
- 2GB ddr;
- 16GB eMMC;
- UART to USB debug port;

Signed-off-by: William Zhang <william.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/board/rockchip/evb_rk3328/evb-rk3328.c b/board/rockchip/evb_rk3328/evb-rk3328.c
new file mode 100644
index 0000000..7e70f38
--- /dev/null
+++ b/board/rockchip/evb_rk3328/evb-rk3328.c
@@ -0,0 +1,40 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/armv8/mmu.h>
+#include <dwc3-uboot.h>
+#include <usb.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = 0x80000000;
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	/* Reserve 0x200000 for ATF bl31 */
+	gd->bd->bi_dram[0].start = 0x200000;
+	gd->bd->bi_dram[0].size = 0x7e000000;
+}
+
+int usb_gadget_handle_interrupts(void)
+{
+	return 0;
+}
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	return 0;
+}