[CI] Print GPU info during setup linux (#164968)

I.e. run `nvidia-smi` if present

Helps detecting what driver version this runner is on, which would have helped debugging some of the issues recently
Pull Request resolved: https://github.com/pytorch/pytorch/pull/164968
Approved by: https://github.com/ngimel

.github/actions/setup-linux/action.yml

@@ -28,6 +28,10 @@ runs:
         echo "instance-type: $(get_ec2_metadata instance-type)"
         echo "system info $(uname -a)"
 
+    - name: Print GPU info (if present)
+      shell: bash
+      run: if [ -f /usr/bin/nvidia-smi ]; then nvidia-smi; fi
+
     - name: Check if in a container runner
       shell: bash
       id: check_container_runner