ectool: fix NetBSD compilation

Since NetBSD does not support uname -o, push check for CygWin
inside separate non-failing condition in Makefile.

Change-Id: Ibd264384f49b33412f0ef8554bd9c9fb8f60a892
Signed-off-by: Andrey Korolyov <andrey@xdel.ru>
Reviewed-on: https://review.coreboot.org/12831
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
3 files changed