net: rmnet_data: Change aggregation copy mode for compat

Change SKB copy and delivery mode to fix certain error
modes when running ingress deaggregation

CRs-Fixed: 565123
Change-Id: If23cee6a0de6b189b2c528423df52555e1879bc3
Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>