[qca-nss-drv] Fix Fraglist Send Buffer

Adjust fraglist head to have opaque for first segment
and DISCARD flag for rest of segments. Firmware will
change build SG chain from this combination.

CRs-Fixed: 823620

Change-Id: Ibae78b85667a5d66032600422a569b946304dc96
Signed-off-by: Thomas Wu <wthomas@codeaurora.org>
2 files changed