Architecture using soft float don't support the math FE_* exceptions.
This commit adds a patch to conditionnally build the FE_* exception
handling.
Fixes:
https://autobuild.buildroot.org/results/88d/88d764dd12bdbdbe633ebc703c461ebe95b75693/
Signed-off-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>