arm: SC589-EZKIT initial support

Adds support for Analog Devices' SC589-EZKIT board. Includes:
- Board specific configs in mach-sc5xx/Kconfig
- Board-specific Kconfig and environment in board/adi/
- Memory configuration

Signed-off-by: Oliver Gaskell <Oliver.Gaskell@analog.com>
diff --git a/board/adi/sc589-ezkit/sc589-ezkit.env b/board/adi/sc589-ezkit/sc589-ezkit.env
new file mode 100644
index 0000000..34b9249
--- /dev/null
+++ b/board/adi/sc589-ezkit/sc589-ezkit.env
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later+ */
+
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+#include <env/adi/adi_boot.env>
+
+adi_stage2_offset=0x20000
+adi_image_offset=0xE0000
+adi_rfs_offset=0x6E0000
+loadaddr=0xC3000000
+jffs2file=adsp-sc5xx-__stringify(CONFIG_ADI_IMAGE)-adsp-sc589-ezkit.jffs2