soc/amd/common: Make AGESA event log parser static

The function agesawrapper_readeventlog() is not used outside of the
wrapper.  Relocate it within the file and make it static.

Change-Id: Ia7fefb4eadbace0cc2fb0f519a1acb7906baaf12
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/22902
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2 files changed