[PATCH] Makefile: avoid non-standard sed expressions

[Tom Rini]

On Tue, 26 Nov 2024 20:12:14 +0100, Mark Kettenis wrote:

> The '?' that is used in the sed expression that determines MK_ARCH
> is part of the extended regular expression syntax, but the default
> behaviour of sed as specified by POSIX is to use only basic regular
> expression syntax.  Use the equivalent '\{0,1\}' instead as
> suggested by the OpenBSD re_format(7) man page.
> 
> 
> [...]

Applied to u-boot/master, thanks!

-- 
Tom