t23x: prometheus: Add overlays for Hope DevKit

Following device-tree overlays for Orin Hope Developer Kit
are added:

1. M.2 Key E header
2. M.2 Key B header
2. Jetson 20-pin GPIO header

And header defining the compatible string is also added

Bug 3966930

Change-Id: I40012c496316f93eff5789fd441f42c96b1d35f0
Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/2953681
Reviewed-by: Asha Talambedu <atalambedu@nvidia.com>
Reviewed-by: Sheetal . <sheetal@nvidia.com>
Reviewed-by: Dara Ramesh <dramesh@nvidia.com>
Tested-by: Asha Talambedu <atalambedu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

include/platforms/dt-bindings/tegra234-p3740-0002-p3701-0008.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2023, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Definitions for Jetson tegra234-p3740-0002-p3701-0008 board.
+ */
+
+#include <dt-bindings/gpio/tegra234-gpio.h>
+
+#define JETSON_COMPATIBLE	"nvidia,p3740-0002+p3701-0008"