PM / tools: cpupower: drop negativity check on unsigned value

Link: https://bugzilla.kernel.org/show_bug.cgi?id=80621
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

tools/power/cpupower/utils/helpers/sysfs.c

@@ -81,7 +81,7 @@ int sysfs_is_cpu_online(unsigned int cpu)
 	close(fd);
 
 	value = strtoull(linebuf, &endp, 0);
-	if (value > 1 || value < 0)
+	if (value > 1)
 		return -EINVAL;
 
 	return value;