imx: imxrt1050-evk: Add support for the NXP i.MXRT1050-EVK

This commit adds board support for i.MXRT1050-EVK from NXP. This board
is an evaluation kit provided by NXP for i.MXRT105x processor family.

More information about this board can be found here:
https://www.nxp.com/design/development-boards/i.mx-evaluation-and-development-boards/i.mx-rt1050-evaluation-kit:MIMXRT1050-EVK

The initial supported/tested devices include:
- Debug serial
- SD

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

include/configs/imxrt1050-evk.h

@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019
+ * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
+ */
+
+#ifndef __IMXRT1050_EVK_H
+#define __IMXRT1050_EVK_H
+
+#include <asm/arch/imx-regs.h>
+
+#define CONFIG_SYS_INIT_SP_ADDR		0x20280000
+
+#ifdef CONFIG_SUPPORT_SPL
+#define CONFIG_SYS_LOAD_ADDR		0x20209000
+#else
+#define CONFIG_SYS_LOAD_ADDR		0x80000000
+#define CONFIG_LOADADDR			0x80000000
+#endif
+
+#define CONFIG_SYS_FSL_ERRATUM_ESDHC135		1
+#define ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE	1
+
+#define PHYS_SDRAM			0x80000000
+#define PHYS_SDRAM_SIZE			(32 * 1024 * 1024)
+
+#define DMAMEM_SZ_ALL			(1 * 1024 * 1024)
+#define DMAMEM_BASE			(PHYS_SDRAM + PHYS_SDRAM_SIZE - \
+					 DMAMEM_SZ_ALL)
+
+#define CONFIG_SYS_MMC_ENV_DEV		0   /* USDHC1 */
+
+/*
+ * Configuration of the external SDRAM memory
+ */
+#define CONFIG_SYS_MALLOC_LEN		(1 * 1024 * 1024)
+
+/* For SPL */
+#ifdef CONFIG_SUPPORT_SPL
+#define CONFIG_SPL_STACK		CONFIG_SYS_INIT_SP_ADDR
+#define CONFIG_SYS_SPL_LEN		0x00008000
+#define CONFIG_SYS_UBOOT_START		0x800023FD
+#endif
+/* For SPL ends */
+
+#endif /* __IMXRT1050_EVK_H */