Documentation/dma-buf-sharing.txt: update API descriptions
Documentation/dma-buf-sharing.txt: update API descriptions

Update some descriptions for API arguments and descriptions.

Signed-off-by: Gioh Kim <07df7bab03df28a2714e7e0ded06841891899bd6@lge.com>
Signed-off-by: Sumit Semwal <d6930da0d649c01d063dcca4d796c2ac2cbb68ba@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs