evl/utils: check: detect CONFIG_FTRACE

Enabling the ftrace infrastructure causes runtime overhead which is
noticeable in latmus figures, even with dynamic tracepoints
disabled. Warn about CONFIG_FTRACE being enabled.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>

utils/kconf-checklist.evl

@@ -49,3 +49,4 @@ CONFIG_KASAN=n
 CONFIG_DEBUG_ENTRY=n
 CONFIG_EVL_DEBUG_CORE=n
 CONFIG_EVL_DEBUG_MEMORY=n
+CONFIG_FTRACE=n