sb/amd/pi/hudson: drop HUDSON_UART option and corresponding code

This option is neither selected nor usable for the only remaining SoC
that uses this code, so drop the remaining parts. configure_hudson_uart
isn't called anywhere and isn't even compiled, since it's guarded by an
#if CONFIG(HUDSON_UART) block and the HUDSON_UART Kconfig option isn't
selected anywhere. Both the offsets used in the iomux_write8 calls and
the UART controller itself aren't listed in the BKDG #52740 Rev 3.05 for
the AMD Family 16h Models 30h-3Fh APUs which is the only SoC that uses
this code, so the code didn't even apply for this chip.

TEST=Timeless build for pcengines/apu2 results in identical binary.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I3f462d1f83a0f1ba851329ebebb1f3263267fdc6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56785
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions