x11-servers/xorg-server: Update to 1.20.8

Update x11-servers/xorg-server to 1.20.8
This is a maintenance release
Most notably, fixes some issues with displayport MST
improves glamor in oom situations

Add a patch to make us more compatible with the linux evdev headers
we're using (devel/evdev-proto).  This is needed for xf86-video-qxl.

complete changelog:
https://lists.x.org/archives/xorg-announce/2020-March/003041.html

Obtained from:	https://github.com/FreeBSDDesktop/freebsd-ports/tree/feature/xserver-1.20

x11-servers/xorg-server/Makefile

@@ -2,8 +2,7 @@
 # $FreeBSD$
 
 PORTNAME?=	xorg-server
-PORTVERSION?=	1.20.7
-PORTREVISION?=	2
+PORTVERSION?=	1.20.8
 PORTEPOCH?=	1
 CATEGORIES=	x11-servers
 MASTER_SITES=	XORG/individual/xserver

x11-servers/xorg-server/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1580036705
-SHA256 (xorg/xserver/xorg-server-1.20.7.tar.bz2) = bd5986f010f34f5b3d6bc99fe395ecb1e0dead15a26807e0c832701809a06ea1
-SIZE (xorg/xserver/xorg-server-1.20.7.tar.bz2) = 6303005
+TIMESTAMP = 1585642684
+SHA256 (xorg/xserver/xorg-server-1.20.8.tar.bz2) = d17b646bee4ba0fb7850c1cc55b18e3e8513ed5c02bdf38da7e107f84e2d0146
+SIZE (xorg/xserver/xorg-server-1.20.8.tar.bz2) = 6309640

x11-servers/xorg-server/files/patch-hw_xfree86_common_xf86str.h

@@ -0,0 +1,11 @@
+--- hw/xfree86/common/xf86str.h.orig	2020-02-23 17:34:26 UTC
++++ hw/xfree86/common/xf86str.h
+@@ -249,7 +249,7 @@ typedef struct _DriverRec {
+  */
+ 
+ /* Tolerate prior #include <linux/input.h> */
+-#if defined(__linux__)
++#if defined(__linux__) || defined(__FreeBSD__)
+ #undef BUS_NONE
+ #undef BUS_PCI
+ #undef BUS_SBUS

x11-servers/xorg-server/pkg-message

@@ -20,9 +20,6 @@ To enable evdev in such a device, run the following:
 To make it persistent across reboots, add the following to /etc/sysctl.conf:
 
 kern.evdev.rcpt_mask=6
-
-If your X session locks up after starting certain applications, rebuild this
-port with the FIXDRM option turned on.
 EOM
 }
 ]