package/binutils: disable binutils >= 2.33.1 for configurations using BR2_BINFMT_FLAT

The patch added by [1] to fix a segfault with elf2flt when binutils
2.33.1 is used on ARM, introduce a regression with previous binutils
version on m68k and ARM.

Theses issues has been reported upstreme [2] [3].

For now, disable binutils >= 2.33.1 for configurations using
BR2_BINFMT_FLAT.

[1] 2b064f86
[2] https://github.com/uclinux-dev/elf2flt/pull/16
[3] https://github.com/uclinux-dev/elf2flt/issues/12



Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>