tools/power/x86/intel-speed-select: Fix cpu-count output

I have a system with 28 threads/socket but intel-speed-select reports
a cpu-count of 29.

Fix an off-by-one error in the cpu_count() function.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

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

@@ -304,7 +304,7 @@ static void set_cpu_present_cpu_mask(void)
 int get_cpu_count(int pkg_id, int die_id)
 {
 	if (pkg_id < MAX_PACKAGE_COUNT && die_id < MAX_DIE_PER_PACKAGE)
-		return cpu_cnt[pkg_id][die_id] + 1;
+		return cpu_cnt[pkg_id][die_id];
 
 	return 0;
 }