Updated amdsmi_get_driver_info() to handle empty strings (#126)

Signed-off-by: Maisam Arif <Maisam.Arif@amd.com>

py-interface/amdsmi_interface.py

@@ -2297,12 +2297,18 @@ def amdsmi_get_gpu_driver_info(
         )
     )
 
-    return {
+    driver_info = {
         "driver_name": info.driver_name.decode("utf-8"),
         "driver_version": info.driver_version.decode("utf-8"),
         "driver_date": info.driver_date.decode("utf-8")
     }
 
+    for key, value in driver_info.items():
+        if value == "":
+            driver_info[key] = "N/A"
+
+    return driver_info
+
 
 def amdsmi_get_power_info(
     processor_handle: amdsmi_wrapper.amdsmi_processor_handle,