msm: net: rndis: RNDIS LAN network interface driver API declarations

Declaration file for rndis_ipa network interface.
Allows LAN network with RNDIS tethered Host.
Data transfer shall be based on Ethernet packets
with RNDIS framing between tethered HOST and embeded Apps.
IPA Core shall be used for Data path.
This change shall allow MIPS offload from Apps core.

Change-Id: Ifb0ef9fa45e8c83a4d93dc38fc17a09e5d3f75d6
Signed-off-by: Talel Atias <tatias@codeaurora.org>