package/gcc: disable GCC 14.x on Microblaze

GCC 14.x is badly broken on Microblaze, with important functions
missing from libatomic, causing build failures in a huge number of
packages. The issue has been reported upstream at
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118280 but still isn't
fixed. For the time being, let's disable GCC 14.x on Microblaze.

Fixes:

  http://autobuild.buildroot.net/results/6fea0ecaa90b24da4e5575565b88018ea95e72c0/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/gcc/Config.in.host

@@ -44,6 +44,9 @@ config BR2_GCC_VERSION_14_X
 	# powerpc spe support has been deprecated since gcc 8.x.
 	# https://gcc.gnu.org/ml/gcc/2018-04/msg00102.html
 	depends on !BR2_POWERPC_CPU_HAS_SPE
+	# Severely broken on Microblaze
+	# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118280
+	depends on !BR2_microblaze
 	select BR2_TOOLCHAIN_GCC_AT_LEAST_14
 
 endchoice