payloads/ipxe/Makefile: Use sed more properly

Instead of redirecting the output of sed into a temporary file and
copying it to its target then, just tell sed to do the replacements
in-place and don't let it create a backup of the original file. The
overhead is not needed.

Change-Id: I442616cd78098b653af5bd49bc7a4f021c99e081
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78924
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

0 files changed, 0 insertions, 0 deletions