ide: Move setting of vendor strings into ide_probe()

The current implementation adds this information in the block device's
probe() function, which is called in the blk_probe_or_unbind() in
ide_probe().

It is simpler to do this in ide_probe() itself, since the effect is the
same. This helps to consolidate use of ide_dev_desc[] which we would like
to remove.

Use strlcpy() to keep checkpatch happy.

Signed-off-by: Simon Glass <sjg@chromium.org>