kconfig: migrate parser to implicit rules

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index 377d04d..c38cc5a 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -733,7 +733,7 @@
 	}
 }
 
-#include "lex.zconf.c"
+#include "zconf.lex.c"
 #include "util.c"
 #include "confdata.c"
 #include "expr.c"