Bump buildroot to 2020.11-rc1 (#985)

* Update buildroot-patches for 2020.11-rc1 buildroot

* Update buildroot to 2020.11-rc1

Signed-off-by: Stefan Agner <stefan@agner.ch>

* Don't rely on sfdisk --list-free output

The --list-free (-F) argument does not allow machine readable mode. And
it seems that the output format changes over time (different spacing,
using size postfixes instead of raw blocks).

Use sfdisk json output and calculate free partition space ourselfs. This
works for 2.35 and 2.36 and is more robust since we rely on output which
is meant for scripts to parse.

* Migrate defconfigs for Buildroot 2020.11-rc1

In particular, rename BR2_TARGET_UBOOT_BOOT_SCRIPT(_SOURCE) to
BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT(_SOURCE).

* Rebase/remove systemd patches for systemd 246

* Drop apparmor/libapparmor from buildroot-external

* hassos-persists: use /run as directory for lockfiles

The U-Boot tools use /var/lock by default which is not created any more
by systemd by default (it is under tmpfiles legacy.conf, which we no
longer install).

* Disable systemd-update-done.service

The service is not suited for pure read-only systems. In particular the
service needs to be able to write a file in /etc and /var. Remove the
service. Note: This is a static service and cannot be removed using
systemd-preset.

* Disable apparmor.service for now

The service loads all default profiles. Some might actually cause
problems. E.g. the profile for ping seems not to match our setup for
/etc/resolv.conf:
[85503.634653] audit: type=1400 audit(1605286002.684:236): apparmor="DENIED" operation="open" profile="ping" name="/run/resolv.conf" pid=27585 comm="ping" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

buildroot/package/watchdog/Config.in

@@ -0,0 +1,10 @@
+config BR2_PACKAGE_WATCHDOG
+	bool "watchdog"
+	depends on BR2_USE_MMU
+	help
+	  Watchdog is a daemon that periodically pets a watchdog device
+	  if the configured system status checks pass. If they do not,
+	  the daemon may execute repair commands, shutdown the system or
+	  reboot it.
+
+	  https://sourceforge.net/projects/watchdog/

buildroot/package/watchdog/watchdog.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256  b8e7c070e1b72aee2663bdc13b5cc39f76c9232669cfbb1ac0adc7275a3b019d  watchdog-5.16.tar.gz
+sha256  af7f3f94e85080204b37f7c53717a2c94c6b54d7fa516ebd74e008cb4c0391bd  COPYING

buildroot/package/watchdog/watchdog.mk

@@ -0,0 +1,15 @@
+################################################################################
+#
+# watchdog
+#
+################################################################################
+
+WATCHDOG_VERSION = 5.16
+WATCHDOG_SITE = http://downloads.sourceforge.net/sourceforge/watchdog
+WATCHDOG_LICENSE = GPL-2.0+
+WATCHDOG_LICENSE_FILES = COPYING
+# By default installs binaries in /usr/sbin/, but we want them in
+# /sbin/ so that they fall at the same place as Busybox counterparts
+WATCHDOG_CONF_OPTS = --sbindir=/sbin
+
+$(eval $(autotools-package))