boards: renesas: da1469x_dk_pro: Update SPI pins

Two pins assigned to SPI controller (P0_22,P0_23) are dedicated
to XTAL32K which is present on devkit.

For this reason SPI function are re-assigned to pins available
on optional header MikorBUS 1 to match configuration of SPI2
which is routed to MikorBUS 2 header.

Signed-off-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>