net: qualcomm: rmnet: Rename ingress data format to data format

This is done so that we can use this field for both ingress and
egress flags.

CRs-Fixed: 2156182
Change-Id: I1a93668c2b7c92b3f8ae3601b39758b4e357aa85
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>