platform/x86: ideapad-laptop: sort includes lexicographically

Managing includes is easier when they are
sorted, so sort them lexicographically.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210203215403.290792-5-pobrn@protonmail.com


Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>