greybus: gb-beagleplay: Ensure le for values in transport

Ensure that the following values are little-endian:
- header->pad (which is used for cport_id)
- header->size

Fixes: ec558bbf ("greybus: Add BeaglePlay Linux Driver")
Reported-by: kernel test robot <yujie.liu@intel.com>
Closes: https://lore.kernel.org/r/202311072329.Xogj7hGW-lkp@intel.com/


Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com>
Link: https://lore.kernel.org/r/20231203075312.255233-1-ayushdevel1325@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>