linux: relocate patch as this is now also in RPi tree

packages/linux/patches/default/linux-0000-nop-gcc-plugin.patch

@@ -0,0 +1,23 @@
+From a7163ecab9b2a395e809e41255f3567d7a188a5d Mon Sep 17 00:00:00 2001
+From: MilhouseVH <milhouseVH.github@nmacleod.com>
+Date: Fri, 14 Feb 2020 00:34:00 +0000
+Subject: [PATCH] gcc-plugin.sh: use CONFIG_PLUGIN_HOSTCC="" on all distros
+
+---
+ scripts/gcc-plugin.sh | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/scripts/gcc-plugin.sh b/scripts/gcc-plugin.sh
+index d3caefe..6ba7f13 100755
+--- a/scripts/gcc-plugin.sh
++++ b/scripts/gcc-plugin.sh
+@@ -1,5 +1,6 @@
+ #!/bin/sh
+ # SPDX-License-Identifier: GPL-2.0
++exit 0
+ srctree=$(dirname "$0")
+ 
+ SHOW_ERROR=
+-- 
+2.20.1
+