msm: ipa3: Add MHIP_UL_TETH channel for IPA/GSI register dump

Add MHIP_UL_TETH channel offset and name to the register mappings
and increment the channel count so this channel can be seen in
the IPA reg dumps.

Change-Id: Ie0393d6f088dc7f1ae3ccc0ade33554310005ddf
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>