tools/power/x86/intel-speed-select: Fix CPU count display

Fix CPU count display for power domain != 0. In the function
punit_id is always 0, so it never incremented cpu count for power
domain id != 0.

Update punit_id after call to update_punit_cpu_info() to what is
actually received from the kernel.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>

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

@@ -778,6 +778,7 @@ static void create_cpu_map(void)
 					map.cpu_map[0].logical_cpu);
 			} else {
 				update_punit_cpu_info(map.cpu_map[0].physical_cpu, &cpu_map[i]);
+				punit_id = cpu_map[i].punit_id;
 			}
 		}
 		cpu_map[i].initialized = 1;