license: Add commands for getting licesne key

Issue:
No license provided leads bf16 models running on *CPU*

Log:
<CACHE DIR>/vaiml_par_0/0/aiecompiler/aiecompiler-flexml.log
AIEMLbuild feature license not found !

Test:
export XILINXD_LICENSE_FILE=<ABSOLUTE PATH>/Xilinx.lic
run bf16 example

It should run on NPU

Signed-off-by: Boyan Vladinov <boyan.vladinov@amd.com>

Author: amd-bvladino

docs/linux.rst

@@ -123,6 +123,33 @@ Install Ryzen AI Software
    echo $RYZEN_AI_INSTALLATION_PATH
 
 
+**********************
+Getting License key
+**********************
+- Go to `AMD Product Licensing page <https://account.amd.com/en/forms/license/license-form.html>`_
+
+- Select **"2025 AI Engine Tools License"** and follow instructions. **NOTE:** License is locked to Host ID (MAC, etc). If you need running RyzenAI on separate host, then you need to add its Host ID to **"2025 AI Engine Tools License"**.
+
+- You will get an email with attached license file.
+
+- Export it as system environment before start the model compilation:
+
+.. code-block:: bash
+
+   export XILINXD_LICENSE_FILE=<ABSOLUTE PATH>/Xilinx.lic
+
+- In case you need to edit the licesne, then go to `Edit license page <https://amd.entitlenow.com/AcrossUser/main.gsp>`_
+
+- **Troubleshooting**:
+
+.. code-block:: bash
+
+   In case of any issue please check log file in cache dir: aiecompiler-flexml.log
+
+   Check for message:
+   AIEMLbuild feature license not found !
+
+
 **********************
 Test the Installation
 **********************