ns16550: unify serial_tegra

Unify serial_tegra, and use the generic binding.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-tegra/board.c b/arch/arm/mach-tegra/board.c
index b00e4b5..8c8927d 100644
--- a/arch/arm/mach-tegra/board.c
+++ b/arch/arm/mach-tegra/board.c
@@ -6,6 +6,8 @@
  */
 
 #include <common.h>
+#include <dm.h>
+#include <ns16550.h>
 #include <spl.h>
 #include <asm/io.h>
 #include <asm/arch/clock.h>
@@ -212,6 +214,18 @@
 	setup_uarts(uart_ids);
 }
 
+#if CONFIG_IS_ENABLED(DM_SERIAL) && !CONFIG_IS_ENABLED(OF_CONTROL)
+static struct ns16550_platdata ns16550_com1_pdata = {
+	.base = CONFIG_SYS_NS16550_COM1,
+	.reg_shift = 2,
+	.clock = CONFIG_SYS_NS16550_CLK,
+};
+
+U_BOOT_DEVICE(ns16550_com1) = {
+	"ns16550_serial", &ns16550_com1_pdata
+};
+#endif
+
 #if !defined(CONFIG_SYS_DCACHE_OFF) && !defined(CONFIG_ARM64)
 void enable_caches(void)
 {