Replace ACPI prints with pr_*() macros for consistency with other platform
devices.

Clean up obsolete ACPI_HOTKEY_COMPONENT code.
Signed-off-by: Kenneth Chan <kenneth.t.chan@gmail.com>
Link: https://lore.kernel.org/r/20200821181433.17653-3-kenneth.t.chan@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>