Config.in: add BR2_HOST_GCC_AT_LEAST_6

Signed-off-by: Martin Bark <martin@barkynet.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Config.in

@@ -47,6 +47,11 @@ config BR2_HOST_GCC_AT_LEAST_5
 	default y if BR2_HOST_GCC_VERSION = "5"
 	select BR2_HOST_GCC_AT_LEAST_4_9
 
+config BR2_HOST_GCC_AT_LEAST_6
+	bool
+	default y if BR2_HOST_GCC_VERSION = "6"
+	select BR2_HOST_GCC_AT_LEAST_5
+
 # Hidden boolean selected by packages in need of Java in order to build
 # (example: xbmc)
 config BR2_NEEDS_HOST_JAVA