TTNN backward ops - incomplete documentation

[npetrovic-tenstorrent]

For all TTNN backward ops:
The documentation does not cover supported data types (BFLOAT16/BFLOAT8_B) neither the supported layouts (ROW_MAJOR/TILE).
In practice, it seems that it does support BFLOAT16 and TILE layout.
However, ROW_MAJOR seems not to be supported for any of these ops.
BFLOAT8_B seems to be sometimes supported, but with low PCC.
Supported ranks are also not mentioned, but execution was successful for 2,3,4.

• Update documentation for Unary bw ops #11086
• Update documentation for Ternary bw ops #11084
• Update documentation for Binary bw ops #11085

[mcw-anasuya]

Docs have been updated with supported types, layouts and range.
Closing this master issue.