firmware: cs_dsp: Add KUnit testing of bin error cases

Add tests for various types of errors and illegal values in
bin files. This covers buffer overflows as well as general
unsupported field values.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20241212143725.1381013-11-rf@opensource.cirrus.com


Signed-off-by: Mark Brown <broonie@kernel.org>