rockchip: rk3328: migrate to use common spl board file

rk3328 has similar boot flow in SPL with other Rockchip SoCs,
migrate to use common spl board file.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 3497920..05d207d 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -105,6 +105,7 @@
 	select ARM64
 	select SUPPORT_SPL
 	select SPL
+	imply SPL_ROCKCHIP_COMMON_BOARD
 	imply SPL_SERIAL_SUPPORT
 	imply SPL_SEPARATE_BSS
 	select ENABLE_ARM_SOC_BOOT0_HOOK
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 808ca43..579a2ce 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -12,7 +12,6 @@
 obj-tpl-$(CONFIG_TPL_ROCKCHIP_COMMON_BOARD) += tpl.o
 
 obj-spl-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board-spl.o
-obj-spl-$(CONFIG_ROCKCHIP_RK3328) += rk3328-board-spl.o
 obj-spl-$(CONFIG_ROCKCHIP_RK3368) += rk3368-board-spl.o spl-boot-order.o
 obj-spl-$(CONFIG_ROCKCHIP_RK3399) += rk3399-board-spl.o spl-boot-order.o
 
diff --git a/arch/arm/mach-rockchip/rk3328-board-spl.c b/arch/arm/mach-rockchip/rk3328-board-spl.c
deleted file mode 100644
index f24fd89..0000000
--- a/arch/arm/mach-rockchip/rk3328-board-spl.c
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * (C) Copyright 2016 Rockchip Electronics Co., Ltd
- *
- * SPDX-License-Identifier:     GPL-2.0+
- */
-
-#include <common.h>
-#include <debug_uart.h>
-#include <dm.h>
-#include <ram.h>
-#include <spl.h>
-#include <asm/io.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-void board_debug_uart_init(void)
-{
-}
-
-void board_init_f(ulong dummy)
-{
-	struct udevice *dev;
-	int ret;
-
-	ret = spl_early_init();
-	if (ret) {
-		debug("spl_early_init() failed: %d\n", ret);
-		hang();
-	}
-
-	preloader_console_init();
-
-	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
-	if (ret) {
-		debug("DRAM init failed: %d\n", ret);
-		return;
-	}
-}
-
-u32 spl_boot_mode(const u32 boot_device)
-{
-	return MMCSD_MODE_RAW;
-}
-
-u32 spl_boot_device(void)
-{
-	return BOOT_DEVICE_MMC1;
-}
-
-#ifdef CONFIG_SPL_LOAD_FIT
-int board_fit_config_name_match(const char *name)
-{
-	/* Just empty function now - can't decide what to choose */
-	debug("%s: %s\n", __func__, name);
-
-	return 0;
-}
-#endif