superio/nuvoton: Inline `nuvoton_hwm_select_bank`
There's no need to place a single-line function in its own compilation
unit, and then guard it behind a Kconfig symbol. This also allows using
this function in stages other than ramstage.
Change-Id: I103a4ea4cef24844d382854c9358bbb37d229e04
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42130
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>