Input: palmas-pwrbutton - make a couple of arrays static const

Don't populate a couple of arrays on the stack but instead make them
static const. Also makes the object code smaller by a few hundred
bytes.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20211129231749.619469-1-colin.i.king@gmail.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>