tools/power turbostat: update version number to 4.7

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

tools/power/x86/turbostat/turbostat.c

@@ -3014,7 +3014,7 @@ int get_and_dump_counters(void)
 }
 
 void print_version() {
-	fprintf(stderr, "turbostat version 4.5 2 Apr, 2015"
+	fprintf(stderr, "turbostat version 4.7 27-May, 2015"
 		" - Len Brown <lenb@kernel.org>\n");
 }