When stopping powerd, set the CPU frequency back to its maximum value

(i.e., what it was almost certainly at before powerd was started).

Submitted by:	R.B. Riddick
MFC after:	3 days

etc/rc.d/powerd

@@ -13,6 +13,13 @@
 name="powerd"
 rcvar=`set_rcvar`
 command="/usr/sbin/${name}"
+stop_postcmd=powerd_poststop
+
+powerd_poststop()
+{
+	sysctl dev.cpu.0.freq=`sysctl -n dev.cpu.0.freq_levels |
+	    sed -e 's:/.*::'` > /dev/null
+}
 
 load_rc_config $name
 run_rc_command "$1"