[mlir][tosa] Update TOSA transpose_conv2d to match spec

[eric-k256]

Summary

The TOSA Specification doesn't have a dilation attribute for transpose_conv2d,
and the padding array is of size 4. (top,bottom,left,right).

This change updates the dialect to match the specification, and updates the lit
tests to match the dialect changes.

[eric-k256]

Fix clang-format issue (clang-format 11 vs. clang-format 10 difference)

[rsuderman]

mlir/lib/Dialect/Tosa/Transforms/TosaDecomposeTransposeConv.cpp

101

Note you need to update the padding changes below. It is built for having two padding values and its unclear if the existing pad behavior is correct.

[eric-k256]

Fix padding in the DecomposeTransposeConv passes to be compatible with the new attribute.
Added a testcase to try to catch future problems with padded transpose_conv.

Renamed the pass to TransposeConvNonStridedConverter, as it isn't specific to dilated
convolutions, but a better option than the StridedConverter.