MAINTAINERS: move my git tree to gitlab

I push to gitlab anyway to get some CI coverage, so let's make
it my primary tree to avoid workflow duplication.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201214132628.56019-1-cohuck@redhat.com>

MAINTAINERS

@@ -106,7 +106,7 @@ F: docs/system/target-s390x.rst
 F: docs/system/s390x/
 F: tests/migration/s390x/
 K: ^Subject:.*(?i)s390x?
-T: git https://github.com/cohuck/qemu.git s390-next
+T: git https://gitlab.com/cohuck/qemu.git s390-next
 L: qemu-s390x@nongnu.org
 
 Guest CPU cores (TCG)
@@ -417,7 +417,7 @@ F: hw/intc/s390_flic.c
 F: hw/intc/s390_flic_kvm.c
 F: include/hw/s390x/s390_flic.h
 F: gdb-xml/s390*.xml
-T: git https://github.com/cohuck/qemu.git s390-next
+T: git https://gitlab.com/cohuck/qemu.git s390-next
 T: git https://github.com/borntraeger/qemu.git s390-next
 L: qemu-s390x@nongnu.org
 
@@ -1436,7 +1436,7 @@ F: hw/watchdog/wdt_diag288.c
 F: include/hw/watchdog/wdt_diag288.h
 F: default-configs/s390x-softmmu.mak
 F: tests/acceptance/machine_s390_ccw_virtio.py
-T: git https://github.com/cohuck/qemu.git s390-next
+T: git https://gitlab.com/cohuck/qemu.git s390-next
 T: git https://github.com/borntraeger/qemu.git s390-next
 L: qemu-s390x@nongnu.org
 
@@ -1767,7 +1767,7 @@ F: hw/vfio/ccw.c
 F: hw/s390x/s390-ccw.c
 F: include/hw/s390x/s390-ccw.h
 F: include/hw/s390x/vfio-ccw.h
-T: git https://github.com/cohuck/qemu.git s390-next
+T: git https://gitlab.com/cohuck/qemu.git s390-next
 L: qemu-s390x@nongnu.org
 
 vfio-ap
@@ -1838,7 +1838,7 @@ M: Halil Pasic <pasic@linux.ibm.com>
 S: Supported
 F: hw/s390x/virtio-ccw*.[hc]
 F: hw/s390x/vhost-vsock-ccw.c
-T: git https://github.com/cohuck/qemu.git s390-next
+T: git https://gitlab.com/cohuck/qemu.git s390-next
 T: git https://github.com/borntraeger/qemu.git s390-next
 L: qemu-s390x@nongnu.org