When a wmfw file has not been loaded the firmware control descriptions
necessary to write a stored calibration are not present. In this case
print a more descriptive error message.

The message is logged at info level because it is not fatal, and does
not necessarily imply that anything is broken.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://msgid.link/r/20240325144450.293630-1-rf@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>