add 3rd party/custom patches

3rd patchs (in alphabetical order):
- bbr3
- ntsync5
- openwrt
- pf-kernel
- xanmod
- zen

no configuration changes for now

debian/patches/patchset-zen/sauce/0002-vhba-Fix-compat-with-kernel-6.11.patch

@@ -0,0 +1,35 @@
+From 6df7338351c342060088aa9abd561b81ccc113d2 Mon Sep 17 00:00:00 2001
+From: "Jan Alexander Steffens (heftig)" <heftig@archlinux.org>
+Date: Sun, 15 Sep 2024 19:05:46 +0000
+Subject: vhba: Fix compat with kernel 6.11
+
+Upstream commit 0edb555a65d1ef047a9805051c36922b52a38a9d changed the
+return value of the `remove` callback from `int` to `void`.
+---
+ drivers/scsi/vhba/vhba.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/scsi/vhba/vhba.c
++++ b/drivers/scsi/vhba/vhba.c
+@@ -1049,7 +1049,11 @@ static int vhba_probe (struct platform_d
+     return 0;
+ }
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 11, 0)
+ static int vhba_remove (struct platform_device *pdev)
++#else
++static void vhba_remove (struct platform_device *pdev)
++#endif
+ {
+     struct vhba_host *vhost;
+     struct Scsi_Host *shost;
+@@ -1062,7 +1066,9 @@ static int vhba_remove (struct platform_
+ 
+     kfree(vhost->commands);
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 11, 0)
+     return 0;
++#endif
+ }
+ 
+ static void vhba_release (struct device * dev)