INT without P4

In README, you claim INT is one application P4 brings to SoNiC. Not quite. SAI already supports INT.

https://github.com/opencomputeproject/SAI/blob/master/doc/DTEL/SAI-Proposal-Data-Plane-Telemetry.md

Further, Innovium/Marvell Teralynx switching asic supports INT without supporting P4. 

Such clarification would be useful.