kconfig: rename zconf.y to parser.y

Use a more logical name.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/scripts/kconfig/lexer.l b/scripts/kconfig/lexer.l
index b2d0a3b..c9df1c8 100644
--- a/scripts/kconfig/lexer.l
+++ b/scripts/kconfig/lexer.l
@@ -15,7 +15,7 @@
 #include <unistd.h>
 
 #include "lkc.h"
-#include "zconf.tab.h"
+#include "parser.tab.h"
 
 #define YY_DECL		static int yylex1(void)