Include <fcntl.h> instead of <sys/fcntl.h>.
Include <fcntl.h> instead of <sys/fcntl.h>.

Musl complains about using sys/fcntl.h, and with -Werror that
gives a compilation failure. Every other file includes <fcntl.h>
so just use that.

Change-Id: Ibc743bbe335e9e9b91da7e4eacc01cc80cd8b35a
Reviewed-on: https://chromium-review.googlesource.com/313419
Commit-Ready: Doug Evans <63bca33a6a1e19f381dec9b7049f8467c9b91a3c@google.com>
Tested-by: Doug Evans <63bca33a6a1e19f381dec9b7049f8467c9b91a3c@google.com>
Reviewed-by: Nam Nguyen <c26e2a6964d90b41b9eabeee8eb089881ad2e039@chromium.org>

coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot