plat: imx8mm: Add initial defintions to facilitate FIP layout

Adds a number of definitions consistent with the established WaRP7
equivalents specifying number of io_handles and block devices.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
Change-Id: If1d7ef1ad3ac3dfc860f949392c7534ce8d206e3

plat/imx/imx8m/imx8mm/include/platform_def.h

 /*
- * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+#include <common/tbbr/tbbr_img_def.h>
+
 #define PLATFORM_LINKER_FORMAT		"elf64-littleaarch64"
 #define PLATFORM_LINKER_ARCH		aarch64
 
@@ -34,11 +36,27 @@
 #define PLAT_SDEI_NORMAL_PRI		0x20
 #define PLAT_SDEI_SGI_PRIVATE		U(9)
 
+#if defined(NEED_BL2)
+#define BL2_BASE			U(0x920000)
+#define BL2_LIMIT			U(0x940000)
+#define BL31_BASE			U(0x900000)
+#define BL31_LIMIT			U(0x920000)
+#define IMX8MM_FIP_BASE			U(0x40310000)
+#define IMX8MM_FIP_SIZE			U(0x000200000)
+#define IMX8MM_FIP_LIMIT		U(FIP_BASE + FIP_SIZE)
+
+/* Define FIP image location on eMMC */
+#define IMX8MM_FIP_MMC_BASE		U(0x100000)
+
+#define PLAT_IMX8MM_BOOT_MMC_BASE	U(0x30B50000) /* SD */
+#else
 #define BL31_BASE			U(0x920000)
 #define BL31_LIMIT			U(0x940000)
+#endif
 
 /* non-secure uboot base */
 #define PLAT_NS_IMAGE_OFFSET		U(0x40200000)
+#define PLAT_NS_IMAGE_SIZE		U(0x00100000)
 
 /* GICv3 base address */
 #define PLAT_GICD_BASE			U(0x38800000)
@@ -127,3 +145,7 @@
 #define COUNTER_FREQUENCY		8000000 /* 8MHz */
 
 #define IMX_WDOG_B_RESET
+
+#define MAX_IO_HANDLES			3U
+#define MAX_IO_DEVICES			2U
+#define MAX_IO_BLOCK_DEVICES		1U