arch: add BR2_ARCH_NEEDS_GCC_AT_LEAST_11

This new symbol will be used by architectures introduced with gcc 11.

[1] https://gcc.gnu.org/gcc-11/changes.html

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

arch/Config.in

@@ -321,6 +321,10 @@ config BR2_ARCH_NEEDS_GCC_AT_LEAST_10
 	bool
 	select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
 
+config BR2_ARCH_NEEDS_GCC_AT_LEAST_11
+	bool
+	select BR2_ARCH_NEEDS_GCC_AT_LEAST_10
+
 # The following string values are defined by the individual
 # Config.in.$ARCH files
 config BR2_ARCH

package/gcc/Config.in.host

@@ -41,6 +41,7 @@ config BR2_GCC_VERSION_9_X
 
 config BR2_GCC_VERSION_10_X
 	bool "gcc 10.x"
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_11
 	# powerpc spe support has been deprecated since gcc 8.x.
 	# https://gcc.gnu.org/ml/gcc/2018-04/msg00102.html
 	depends on !BR2_powerpc_SPE