bhnd_nvram_io_setsize
if ((error = bhnd_nvram_io_setsize(bcm->data, io_size)))
if ((error = bhnd_nvram_io_setsize(btxt->data, io_size)))
int bhnd_nvram_io_setsize(struct bhnd_nvram_io *io,
if ((error = bhnd_nvram_io_setsize(io, olen)))