soc/amd/stoneyridge: Add additional early LPC and SPI init

Additional LPC and SPI setup needed to move AGESA out of the bootblock.
Setup the prefetch, sio decode, and a bugfix for SPI.

BUG=b:70558952
TEST=Boots with AGESA moved out of bootblock.

Change-Id: I2c0d8632b25c036ff977c21477feb4778575189c
Signed-off-by: Marc Jones <marc.jones@scarletltd.com>
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/25755
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2 files changed