drivers/spi: Remove Kconfig prompt from SPI_FLASH_SMM

Why would that be a user visible option? Drop the prompt and the
`default n` and select it automatically when needed. I hope I
caught all its users.

TEST=Confirmed that systems with ELOG_GSMI or DEBUG_SMI compile
     and link.

Change-Id: I44aeec530cc333f4ed4c8cfe67c7b5c9d8fb0049
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/26872
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

0 files changed, 0 insertions, 0 deletions