tools/power/x86/intel-speed-select: Fix last cpu number

Here topology_max_cpus is used for total CPU count, not the last CPU
number. So remove "-1".
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

tools/power/x86/intel-speed-select/isst-config.c

@@ -313,7 +313,6 @@ static void set_max_cpu_num(void)
 	while (fscanf(filep, "%lx,", &dummy) == 1)
 		topo_max_cpus += BITMASK_SIZE;
 	fclose(filep);
-	topo_max_cpus--; /* 0 based */
 
 	debug_printf("max cpus %d\n", topo_max_cpus);
 }