block/qcow2: Don't use cpu_to_*w()

block/qcow2: Don't use cpu_to_*w()

Don't use the cpu_to_*w() functions, which we are trying to deprecate.
Instead either just use cpu_to_*() to do the byteswap, or use
st*_be_p() if we need to do the store somewhere other than to a
variable that's already the correct type.

Signed-off-by: Peter Maydell <[email protected]>
Message-id: 1466093177[email protected]
Reviewed-by: Eric Blake <[email protected]>
Signed-off-by: Max Reitz <[email protected]>