gcc: remove 4.5.x

It's been deprecated for some time now.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
[Thomas: move option to Config.in.legacy, as noticed by Peter.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/Config.in.legacy b/Config.in.legacy
index 0ea8c7d..1cd2697 100644
--- a/Config.in.legacy
+++ b/Config.in.legacy
@@ -145,6 +145,13 @@
 ###############################################################################
 comment "Legacy options removed in 2016.02"
 
+config BR2_GCC_VERSION_4_5_X
+	bool "gcc 4.5.x has been removed"
+	select BR2_LEGACY
+	help
+	  The 4.5.x version of gcc has been removed. Use a newer
+	  version instead.
+
 config BR2_PACKAGE_SQLITE_READLINE
 	bool "command-line editing support was updated"
 	select BR2_PACKAGE_NCURSES