During initial probe, after reset is asserted for the first time, the
driver goes through a boot process to ensure the amp is ready to be
used. This involves verifying a boot flag, as well as verifying the
chip ids.

This is necessary since it is possible for the amp to have been fully
reset by the system suspend calls.
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231026150558.2105827-5-sbinding@opensource.cirrus.comSigned-off-by: Takashi Iwai <tiwai@suse.de>