am64x: yaml: Add board configs for AM64x

Added YAML configs for AM64xx

Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
diff --git a/board/ti/am64x/pm-cfg.yaml b/board/ti/am64x/pm-cfg.yaml
new file mode 100644
index 0000000..83c6a03
--- /dev/null
+++ b/board/ti/am64x/pm-cfg.yaml
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (C) 2022-2023 Texas Instruments Incorporated - https://www.ti.com/
+#
+# Power management configuration for AM64x
+#
+
+---
+
+pm-cfg:
+        rev:
+                boardcfg_abi_maj : 0x0
+                boardcfg_abi_min : 0x1