ASoC: uniphier: aio-core: Make some read-only arrays static const

Don't populate the read-only arrays slotsel_2ch, slotsel_multi, v_pll
and v_div on the stack but instead make them static const. Also makes
the object code a little smaller.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20221202164156.1812971-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>