package/botan: needs gcc >= 11

The "using enum" was added in gcc 11.x [0] (see also [1]).

Compile successfully tested with internal Buildroot toolchain for
sparc with gcc 12.x as gcc 11.x is not available anymore.

The autobuild failure will be avoided now and fixed with newer external
bootlin toolchains.

Fixes:
 - http://autobuild.buildroot.org/results/ab8/ab83b920156f5a1e51ef960e4007769b5c27d0a1

[0] https://gcc.gnu.org/projects/cxx-status.html#cxx20
[1] https://stackoverflow.com/questions/75018634/how-to-use-the-using-keyword-in-gcc-10-4

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/botan/Config.in

@@ -14,7 +14,7 @@ config BR2_PACKAGE_BOTAN_ARCH_SUPPORTS
 config BR2_PACKAGE_BOTAN
 	bool "botan"
 	depends on BR2_INSTALL_LIBSTDCPP
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_10 # C++20
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_11 # C++20
 	depends on BR2_PACKAGE_BOTAN_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_BOOST_FILESYSTEM if BR2_PACKAGE_BOOST && BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
@@ -24,8 +24,8 @@ config BR2_PACKAGE_BOTAN
 
 	  http://botan.randombit.net
 
-comment "botan needs a toolchain w/ threads, C++, gcc >= 10"
+comment "botan needs a toolchain w/ threads, C++, gcc >= 11"
 	depends on !BR2_INSTALL_LIBSTDCPP \
-		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_10 \
+		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_11 \
 		|| !BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_PACKAGE_BOTAN_ARCH_SUPPORTS