dm: tegra: Provide serial platform data for SPL

At present an incorrect #if term is preventing this data from being compiled
in. All tegra boards use driver model for serial, so we can just drop this.

Fixes: fde7e18938 ("dm: tegra: pci: Move CONFIG_PCI_TEGRA to Kconfig")
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Thomas Chou <thomas@wytron.com.tw>

arch/arm/mach-tegra/board.c

@@ -214,7 +214,7 @@ void board_init_uart_f(void)
 	setup_uarts(uart_ids);
 }
 
-#if CONFIG_IS_ENABLED(DM_SERIAL) && !CONFIG_IS_ENABLED(OF_CONTROL)
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 static struct ns16550_platdata ns16550_com1_pdata = {
 	.base = CONFIG_SYS_NS16550_COM1,
 	.reg_shift = 2,