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-xanmod/clearlinux/0002-firmware-Enable-stateless-firmware-loading.patch

@@ -0,0 +1,25 @@
+From 52caaf4af0242cc3ac1ddaf9791c4c08a4b7226d Mon Sep 17 00:00:00 2001
+From: William Douglas <william.douglas@intel.com>
+Date: Wed, 20 Jun 2018 17:23:21 +0000
+Subject: [PATCH 2/4] firmware: Enable stateless firmware loading
+
+Prefer the order of specific version before generic and /etc before
+/lib to enable the user to give specific overrides for generic
+firmware and distribution firmware.
+
+Signed-off-by: Alexandre Frade <kernel@xanmod.org>
+---
+ drivers/base/firmware_loader/main.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/base/firmware_loader/main.c
++++ b/drivers/base/firmware_loader/main.c
+@@ -471,6 +471,8 @@ static int fw_decompress_xz(struct devic
+ static char fw_path_para[256];
+ static const char * const fw_path[] = {
+ 	fw_path_para,
++	"/etc/firmware/" UTS_RELEASE,
++	"/etc/firmware",
+ 	"/lib/firmware/updates/" UTS_RELEASE,
+ 	"/lib/firmware/updates",
+ 	"/lib/firmware/" UTS_RELEASE,