libmtp: Support > 4GB file transfers
libmtp: Support > 4GB file transfers

The libmtp specific piece of supporting > 4GB file transfers was
missing.

Signed-off-by: Philip Langdale <c2e2ad641b78da5d5e231b38d6c2530ebaa29faa@overt.org>
Signed-off-by: Linus Walleij <67b0e6e4a7f8300bccd309fb10a9106ef3d7b5b0@df.lth.se>

philipl/libmtp,libmtp/libmtp,mmalecki/libmtp,reverendhomer/libmtp,jemc/libmtp,olunx/libmtp,philipl/libmtp,olunx/libmtp,jemc/libmtp,reverendhomer/libmtp,reverendhomer/libmtp,mmalecki/libmtp,jemc/libmtp,reverendhomer/libmtp,olunx/libmtp,libmtp/libmtp,mmalecki/libmtp,jemc/libmtp,philipl/libmtp,libmtp/libmtp