gnu: qemu: Add upstream patch for failing test.

Fixes <https://bugs.gnu.org/37860>.
Reported by Danny Milosavljevic <dannym@scratchpost.org>.

* gnu/packages/virtualization.scm (qemu)[patches]: Add upstream patch
to fix tests on linux-libre >= 5.3.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu/packages/virtualization.scm

@@ -114,7 +114,16 @@
                                  version ".tar.xz"))
              (sha256
               (base32
-               "1ih9v6gxgild3m4g80ld4dr3wp9db3bpy203k73fxgc9hqhn0vk5"))))
+               "1ih9v6gxgild3m4g80ld4dr3wp9db3bpy203k73fxgc9hqhn0vk5"))
+             (patches
+              (list
+               ;; Fix an ordering issue with recent kernels, see
+               ;; <https://bugs.gnu.org/37860>.
+               (qemu-patch
+                "bf9e0313c27d8e6ecd7f7de3d63e1cb25d8f6311"
+                "qemu-tests-make-filemonitor-test-more-robust.patch"
+                (base32
+                 "1242wqpr8id3cn88pzbig3sqh4znml0g0h2mwdmdyhp81blq7s7n"))))))
     (build-system gnu-build-system)
     (arguments
      '(;; Running tests in parallel can occasionally lead to failures, like: