utils: spkmodem: Add Makefile and gitignore

Change-Id: Ie3a6a777f5b667e881a4462bdd44a34dbace5520
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: https://review.coreboot.org/23862
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2 files changed