main/xen: split xen-qemu

The qemu files are optional and takes lots of space

seabios only needed in runtime by xen-qemu, but its also
a build dependency.
9 jobs for !14877 with xen-split-qemu in 13 minutes and 58 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
failed #253015
docker-alpine x86_64 allowed to fail
lint

00:00:22

 
  Build
passed #253020
docker-alpine ci-build aarch64
build-aarch64

00:05:06

passed #253021
docker-alpine ci-build armv7
build-armv7

00:00:34

passed #253019
docker-alpine ci-build ppc64le
build-ppc64le

00:00:47

passed #253018
docker-alpine ci-build s390x
build-s390x

00:00:42

passed #253017
docker-alpine ci-build x86
build-x86

00:00:24

passed #261437
docker-alpine ci-build x86_64
build-x86_64

00:08:26

passed #257295
x86_64 ci-build docker-alpine
build-x86_64

00:08:41

passed #253016
docker-alpine ci-build x86_64
build-x86_64

00:07:57

 
Name Stage Failure
failed
lint Lint
No job log