ASoC: wm_adsp: Support new metadata block ID's

Coefficient files now support additional metadata blocks, these
contain machine parsable text strings describing the parameters
contained in the coefficient file.

Signed-off-by: James Schulman <james.schulman@cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200723110321.16382-1-ckeepax@opensource.cirrus.com


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