msm: ecm_ipa: add ethernet bridging support

Provide header type information to IPA driver for Ethernet Bridging.

Change-Id: I699f63fd2a009b1ab015c4a961bc17e6a36d2f2b
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Ravit Katzav <rkatzav@codeaurora.org>