platform/x86: x86-android-tablets: Move shared power-supply fw-nodes to a separate file

Move the shared power-supply fw-nodes and related files to
a new separate shared-psy-info.c file.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230301092331.7038-6-hdegoede@redhat.com