cutelyst: Add dependency on Kernel headers >= 3.3

Cutelyst-WSGI module uses SO_REUSEPORT

Fixes:

http://autobuild.buildroot.net/results/d38411eda9edf16e2c40d8931bcfc889faae43dc/

Signed-off-by: Daniel Nicoletti <dantti12@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/cutelyst/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_CUTELYST
 	depends on BR2_PACKAGE_QT5
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # C++11
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 	select BR2_PACKAGE_OPENSSL
 	select BR2_PACKAGE_QT5BASE_GUI
 	help
@@ -11,6 +12,7 @@ config BR2_PACKAGE_CUTELYST
 
 	  https://cutelyst.org
 
-comment "cutelyst needs a toolchain w/ C++, gcc >= 4.8"
+comment "cutelyst needs a toolchain w/ C++, gcc >= 4.8, headers >= 3.3"
 	depends on BR2_PACKAGE_QT5
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	depends !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3