ks8851: Change to hardware reset issue

Change for enabling timestamping from ethtool and
delay intorduced to properly set the gpio pin after
hard reset of the driver from io expander.

Change-Id: Iee5e5f839d72c7ba446805711b52d2da6a952566
Signed-off-by: Utkarsh Saxena <usaxena@codeaurora.org>