[gnome-build-meta/valentindavid/qemu-bridge-helper-suid] core-deps/qemu.bst: Fix suid for qemu-bridge-helper

[Valentin David <valentindavid src gnome org>]

commit d043ba8ef2c1fb13517b36565536279b2f853dbb
Author: Valentin David <me valentindavid com>
Date:   Sat Feb 26 23:05:03 2022 +0100

    core-deps/qemu.bst: Fix suid for qemu-bridge-helper
    
    Setuid for qemu-bridge-helper is required to make `-netdev bridge`
    work for user, if allowd by `/etc/qemu/bridge.conf`.

 elements/core-deps/qemu.bst | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/elements/core-deps/qemu.bst b/elements/core-deps/qemu.bst
index 91174144f..995c131e4 100644
--- a/elements/core-deps/qemu.bst
+++ b/elements/core-deps/qemu.bst
@@ -71,3 +71,11 @@ variables:
     --build=%{triplet}
     %{conf-extra}
     %{conf-local}
+
+public:
+  initial-script:
+    script: |
+      #!/bin/bash
+      set -eu
+      sysroot="${1}"
+      chmod 4755 "${sysroot}%{libexecdir}/qemu-bridge-helper"