sigrok-cross-linux: Use /bin/sh.

The script doesn't contain anything bash-specific and works fine with
e.g. dash.

diff --git a/cross-compile/linux/sigrok-cross-linux b/cross-compile/linux/sigrok-cross-linux
index 8c75d4c4356ab1b8e91696f21e32e6e06c5cfc00..a01173ab7c37aa97f8073ecae9f88c33cbaa2a03 100755 (executable)
--- a/cross-compile/linux/sigrok-cross-linux
+++ b/cross-compile/linux/sigrok-cross-linux
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 ##
 ## This file is part of the sigrok-util project.
 ##