[PATCH v2] arch: um: Mark the stack non-executable to fix a binutils warning

[Richard Weinberger]

----- Ursprüngliche Mail -----
> Von: "davidgow" <davidgow at google.com>
> 
> Changes since v1:
> http://lists.infradead.org/pipermail/linux-um/2022-August/004234.html
> - Pass the -z noexecstack and --no-warn-rwx-segments flags as LDFLAGS,
>  rather than as CFLAGS via -Wl
> - Check that --no-warn-rwx-segments exists with the ld-option function
>  (Thanks Richard)
> - Add Lukas and Randy's tags.

Now it passes the test. :)
Applied.

Thanks,
//richard