drivers/elog: remove elog Kconfig variables

Now that FMAP is a first class citizen in coreboot
there's no reason to have alternate locations for ELOG.
If one wants eventlog support they need to specify the
ELOG entry in the FMAP. The one side effect is that
the code was previously limiting the size to 4KiB
because the default ELOG_AREA_SIZE was 4KiB. However,
that's no longer the case as the FMAP region size is
honored.

Change-Id: I4ce5f15032387155d2f56f0de61f2d85271ba606
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15814
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2 files changed