This patch changes PadOp's padding input to type !tosa.shape<2 * rank>,
(where rank is the rank of the PadOp's input), instead of a <rank x 2>
tensor.
This patch is also a part of TOSA v1.0 effort:
https://discourse.llvm.org/t/rfc-tosa-dialect-increment-to-v1-0/83708
This patch updates the PadOp to match all against the TOSA v1.0 form.
Original Authors include:
@Tai78641
@wonjeon
Co-authored-by: Tai Ly <tai.ly@arm.com>