tools/power turbosat: update version number

Signed-off-by: Len Brown <len.brown@intel.com>

tools/power/x86/turbostat/turbostat.c

@@ -3119,7 +3119,7 @@ int get_and_dump_counters(void)
 }
 
 void print_version() {
-	fprintf(stderr, "turbostat version 4.7 17-June, 2015"
+	fprintf(stderr, "turbostat version 4.8 26-Sep, 2015"
 		" - Len Brown <lenb@kernel.org>\n");
 }