Sanity check amdgpu module is loaded in rocm_smi.py

Instead of check /proc/modules for amdgpu, the code will check
/sys/module/amdgpu/initstate which covers the case when the driver
is compiled into the kernel.

Change-Id: Id39ec5b0eb9b68204bc9f5f779057ba8cc090bdc

python_smi_tools/rocm_smi.py

@@ -66,7 +66,7 @@ def driverInitialized():
     """
     driverInitialized = ''
     try:
-        driverInitialized = str(subprocess.check_output("cat /proc/modules|grep amdgpu", shell=True))
+        driverInitialized = str(subprocess.check_output("cat /sys/module/amdgpu/initstate |grep live", shell=True))
     except subprocess.CalledProcessError:
         pass
     if len(driverInitialized) > 0: