x11-drivers/xf86-video-qxl: add patch from upstream

x11-drivers/xf86-video-qxl/files/xf86-video-qxl-kms-call-leavevt-on-shutdown.patch

@@ -0,0 +1,32 @@
+From 0f9e801c04f31b0b173ec22725d08122ecbfaea6 Mon Sep 17 00:00:00 2001
+From: Ray Strode <rstrode@localhost.localdomain>
+Date: Wed, 3 Oct 2018 09:00:40 -0400
+Subject: [PATCH] kms: call LeaveVT on shutdown
+
+It's important that LeaveVT is called on shutdown, since
+the X server will leave the current vt on shutdown.
+
+This commit adds the required call, and fixes some confusion
+when one X server is starting at around the same time another
+X server is shutting down.
+---
+ src/qxl_kms.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/qxl_kms.c b/src/qxl_kms.c
+index 47d7a34..b599908 100644
+--- a/src/qxl_kms.c
++++ b/src/qxl_kms.c
+@@ -132,6 +132,9 @@ qxl_close_screen_kms (CLOSE_SCREEN_ARGS_DECL)
+ 
+     result = pScreen->CloseScreen (CLOSE_SCREEN_ARGS);
+ 
++    if (pScrn->vtSema)
++	pScrn->LeaveVT (VT_FUNC_ARGS);
++
+     return result;
+ }
+ 
+-- 
+2.24.1
+