update example device-plugin yaml file (#124)

device plugin container should be brought up using privileged mode
we need this to read the properties files under /sys directory
other 2 example files in the repo have this option set

Author: biluriuday

k8s-ds-amdgpu-dp.yaml

@@ -22,7 +22,7 @@ spec:
       - image: rocm/k8s-device-plugin
         name: amdgpu-dp-cntr
         securityContext:
-          allowPrivilegeEscalation: false
+          privileged: true
           capabilities:
             drop: ["ALL"]
         volumeMounts: