newlib/x86_32: add casting to skb calls in pci
newlib/x86_32: add casting to skb calls in pci

BarrelfishOS/barrelfish,mslovy/barrelfish,linusyang/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,mslovy/barrelfish,8l/barrelfish,linusyang/barrelfish,utsav2601/cmpe295A,BarrelfishOS/barrelfish,mslovy/barrelfish,linusyang/barrelfish,8l/barrelfish,linusyang/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,mslovy/barrelfish,8l/barrelfish,mslovy/barrelfish,utsav2601/cmpe295A,kishoredbn/barrelfish,utsav2601/cmpe295A,mslovy/barrelfish,BarrelfishOS/barrelfish,8l/barrelfish,kishoredbn/barrelfish,kishoredbn/barrelfish,utsav2601/cmpe295A,8l/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,utsav2601/cmpe295A,8l/barrelfish,BarrelfishOS/barrelfish,linusyang/barrelfish,utsav2601/cmpe295A