bootmisc.h: use "date -s" to set time

without "-s", 201009031653 would be interpreted incorrectly by date
and then we saw below warning:
	date: invalid date 165320100903

Fix [BUGID #265]

Signed-off-by: Kevin Tian <kevin.tian@intel.com>

meta/recipes-core/initscripts/initscripts-1.0/bootmisc.sh

@@ -71,7 +71,7 @@ then
 	read TIMESTAMP < /etc/timestamp2
         NEEDUPDATE=`expr \( $TIMESTAMP \> $SYSTEMDATE + 10000 \)`
         if [ $NEEDUPDATE -eq 1 ]; then 
-		date $TIMESTAMP
+		date -s $TIMESTAMP
 		/etc/init.d/hwclock.sh stop
 	fi
 fi