hexagon: add support for Q1_0 and Q2_0 (#30122)
* hexagon: add support for q1_0 quant
* hexagon: enable Q1_0 weights in the 2D HMX MUL_MAT path
* hex-q1: cleanup gates, generalize tiling and remove in-loop divs
* hex-tiling: document tiled formats in developer.md and update htp-tensor.h
* hex-q2: add support for Q2_0
* hex-q2: remove stale asserts and speacial cases
* hex-mm: fix MUL_MAT_NX assumption about square tiling, Q1/Q2 have non-square tiles
* hex-q1/2: minor optimizations (unrolls/un-unrolls/...)
* hex-q1: optimize Q1_0 layout to reduce unpack/vrmpy overhead
* hex-q1/q2_0: further optimize vec_dots
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Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>
