net: qualcomm: rmnet: Add new rmnet_perf ingress hook

rmnet_perf now can handle performing GRO of packets that have already
passed through RSB/RSC. Add a hook in rmnet_deliver_skb() to send the
packets down this path when the module is inserted.

Change-Id: I56f2de49dd8be11d2c2a9f0d7c1fb1086240042b
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>