(drivers) lan91c111: Minor optimization
(drivers) lan91c111: Minor optimization

Write 32 bits when it's handy

Kakadu/embox,Kakadu/embox,embox/embox,embox/embox,Kakadu/embox,embox/embox,embox/embox,Kakadu/embox,embox/embox,embox/embox,Kakadu/embox,Kakadu/embox,Kakadu/embox