feat(workflow): Add Buildroot for AM62LX in Github workflow.

Added the buildroot OS for AM62LX device in the github
workflow for CI/CD build of the processor-sdk-docs.

Signed-off-by: sadik <[email protected]>

Author: sadik-smd

.github/workflows/build.yml

@@ -51,6 +51,8 @@ jobs:
             device: AM62X
           - os: buildroot
             device: AM62X
+          - os: buildroot
+            device: AM62LX
           - os: debian
             device: AM62X
           - os: debian