linux-phytec-fsl

xen/blkback: Shuffle code around (vbd_translate moved higher).

We take out the chunk of code dealing with mapping to the guest
of pages into the xen_blk_map_buf code. And we also move the
vbd_translate to be done much earlier.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>