[PATCH] kbuild: Allow to select bash in a modified environment

[Schspa Shi]

This fixes the build error when the system has a default bash version
which is too old to support associative array variables.

The build error log as fellowing:
linux/scripts/check-local-export: line 11: declare: -A: invalid option
declare: usage: declare [-afFirtx] [-p] [name[=value] ...]

Signed-off-by: Schspa Shi <schspa@xxxxxxxxx>
---
 scripts/check-local-export | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/check-local-export b/scripts/check-local-export
index 017119d89cd2..2defd0bf3552 100755
--- a/scripts/check-local-export
+++ b/scripts/check-local-export
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2022 Masahiro Yamada <masahiroy@xxxxxxxxxx>
-- 
2.24.3 (Apple Git-128)