GitLab

- make xenguest-manage rdepend on xen-tools to adapt to recipe
modifications in meta-virtualization
- add xen to IMAGE_EXTRADEPENDS to build xen binary when build
autonomy-host-image
- switch arm64-autonomy-machine to use Linux 5.4
- remove trace patch for xen as meta-virtualization is now using a xen
release which has this fixed
- rework xen bbappends to adapt to changes done in xen recipes

Change-Id: I439bde0df2c0a16f529436b65f1a96af5a2981af
Issue-Id: SCM-833
Signed-off-by: Vineeth Raveendran <vineeth.raveendran@arm.com>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>