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/openjdk/Config.in

@@ -48,6 +48,74 @@ config BR2_PACKAGE_OPENJDK
 
 if BR2_PACKAGE_OPENJDK
 
+choice
+	prompt "openjdk version"
+	default BR2_OPENJDK_VERSION_LATEST
+	help
+	  Select the version of OpenJDK you wish to use.
+
+config BR2_OPENJDK_VERSION_LTS
+	bool "LTS (OpenJDK 11)"
+
+config BR2_OPENJDK_VERSION_LATEST
+	bool "latest (OpenJDK 14)"
+
+endchoice
+
+config BR2_PACKAGE_OPENJDK_FULL_JDK
+	bool "Build the full JDK"
+	help
+	  Install the full JDK instead of just the run time.
+	  The full JDK includes several packages used for debugging and
+	  development. Some useful tools included with the JDK are:
+	    - javaws
+	      Command line tool for launching Java Web Start and setting
+	      various options.
+
+	    - jcmd:
+	      JVM Diagnostic Commands tool: Sends diagnostic command
+	      requests to a running Java Virtual Machine.
+
+	    - jinfo
+	      Configuration Info for Java: Prints configuration
+	      information for a given process or core file or a remote
+	      debug server.
+
+	    - jmap
+	      Memory Map for Java: Prints shared object memory maps or
+	      heap memory details of a given process or core file or a
+	      remote debug server.
+
+	    - jsadebugd
+	      Serviceability Agent Debug Daemon for Java: Attaches to a
+	      process or core file and acts as a debug server.
+
+	    - jstack
+	      Stack Trace for Java - Prints a stack trace of threads for
+	      a given process or core file or remote debug server.
+
+	    - jstat
+	      JVM Statistics Monitoring Tool: Attaches to an
+	      instrumented HotSpot Java virtual machine and collects and
+	      logs performance statistics as specified by the command
+	      line options.
+
+	    - jstatd
+	      JVM jstat Daemon - Launches an RMI server application that
+	      monitors for the creation and termination of instrumented
+	      HotSpot Java virtual machines and provides an interface to
+	      allow remote monitoring tools to attach to Java virtual
+	      machines running on the local system.
+
+	  Note:
+	  While the JDK also comes with several tools which can be used
+	  for developing java applications on a target, Buildroot does
+	  not support development on a target. Building the full JDK is
+	  supported for debugging purposes only.
+
+	  Selecting this option increases the file system by
+	  approximately 110M.
+
 choice
 	prompt "openjdk variant"
 	default BR2_PACKAGE_OPENJDK_JVM_VARIANT_SERVER if !BR2_powerpc