platform/x86: ideapad-laptop: move ACPI helpers from header to source file

[ Upstream commit 6c1fa8ed ]

Since moving ymc_trigger_ec from lenovo-ymc to ideapad-laptop, only the
latter uses these definitions and functions.

Move them back to source file.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/57a48d2582b567f6c6fbcd3b379e17aee0fb5a94.1721898747.git.soyer@irl.hu


Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Stable-dep-of: 5808c342 ("platform/x86: ideapad-laptop: use usleep_range() for EC polling")
Signed-off-by: Sasha Levin <sashal@kernel.org>