gnu: qemu: Disable qtest-aarch64/migration-test test.

* gnu/packages/patches/qemu-disable-aarch64-migration-test.patch: Add patch.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/virtualization.scm (qemu): Apply it.

gnu/local.mk

@@ -1749,6 +1749,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/python-werkzeug-tests.patch		\
   %D%/packages/patches/python-zeep-Fix-pytest_httpx-test-cases.patch	\
   %D%/packages/patches/qemu-build-info-manual.patch		\
+  %D%/packages/patches/qemu-disable-aarch64-migration-test.patch	\
   %D%/packages/patches/qemu-glibc-2.27.patch 			\
   %D%/packages/patches/qemu-glibc-2.30.patch 			\
   %D%/packages/patches/qemu-fix-agent-paths.patch 		\

gnu/packages/patches/qemu-disable-aarch64-migration-test.patch

@@ -0,0 +1,13 @@
+Disable the qtest-aarch64/migration-test, which sometimes fail non-deterministically.
+See: https://gitlab.com/qemu-project/qemu/-/issues/1230.
+
+--- qemu-7.1.0/tests/qtest/meson.build.old	1969-12-31 19:00:01.000000000 -0500
++++ qemu-7.1.0/tests/qtest/meson.build	2022-09-26 11:11:05.434209797 -0400
+@@ -219,7 +219,6 @@
+   ['arm-cpu-features',
+    'numa-test',
+    'boot-serial-test',
+-   'migration-test',
+    'bcm2835-dma-test']
+ 
+ qtests_s390x = \

gnu/packages/virtualization.scm

@@ -169,6 +169,7 @@
         (base32
          "1rmvrgqjhrvcmchnz170dxvrrf14n6nm39y8ivrprmfydd9lwqx0"))
        (patches (search-patches "qemu-build-info-manual.patch"
+                                "qemu-disable-aarch64-migration-test.patch"
                                 "qemu-fix-agent-paths.patch"))
        (modules '((guix build utils)))
        (snippet