rocminfo fails when amdgpu is built into the kernel

When amdgpu is built into the kernel, /sys/module/amdgpu/initstate will not be created even when the driver is functional. However, test shows /sys/module/amdgpu will be present. Adding an additional check for /sys/module/amdgpu when /sys/module/amdgpu/instate is not present.

Change-Id: Ie5c67c7e1eff8ac1683b211aaec802d0d342aeeb

rocminfo.cc

@@ -1220,9 +1220,14 @@ int CheckInitialState(void) {
       return -1;
     }
   } else {
-    printf("%sROCk module is NOT loaded, possibly no GPU devices%s\n",
-                                                          COL_RED, COL_RESET);
-    return -1;
+    int module_dir;
+    module_dir = open("/sys/module/amdgpu", O_DIRECTORY);
+    if (module_dir < 0) {
+      printf("%sROCk module is NOT loaded, possibly no GPU devices%s\n",
+                                                            COL_RED, COL_RESET);
+      return -1;
+    }
+    close(module_dir);
   }
 
   // Check if user belongs to the group for /dev/kfd (e.g. "video" or