Adding qemu 5.1 for rpi3 emulation

app-emulation/qemu/files/qemu-5.1.0-pixman-for-vhost-user-gpu.patch

@@ -0,0 +1,62 @@
+https://bugs.gentoo.org/735146
+
+From 4fd46e6cdd976f4aecdc3fbbad728e00a7bc4ee0 Mon Sep 17 00:00:00 2001
+From: Rafael Kitover <rkitover@gmail.com>
+Date: Thu, 13 Aug 2020 20:19:24 +0000
+Subject: [PATCH] configure: Require pixman for vhost-user-gpu.
+
+Use the test from Makefile to check if vhost-user-gpu is being built,
+and if so require pixman.
+
+Signed-off-by: Rafael Kitover <rkitover@gmail.com>
+---
+ configure | 28 ++++++++++++++--------------
+ 1 file changed, 14 insertions(+), 14 deletions(-)
+
+--- a/configure
++++ b/configure
+@@ -4062,20 +4062,6 @@ if test "$modules" = yes; then
+     fi
+ fi
+ 
+-##########################################
+-# pixman support probe
+-
+-if test "$softmmu" = "no"; then
+-  pixman_cflags=
+-  pixman_libs=
+-elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
+-  pixman_cflags=$($pkg_config --cflags pixman-1)
+-  pixman_libs=$($pkg_config --libs pixman-1)
+-else
+-  error_exit "pixman >= 0.21.8 not present." \
+-      "Please install the pixman devel package."
+-fi
+-
+ ##########################################
+ # libmpathpersist probe
+ 
+@@ -4491,6 +4477,20 @@ if test "$opengl" = "yes" && test "$have_x11" = "yes"; then
+   done
+ fi
+ 
++##########################################
++# pixman support probe
++
++if test "$softmmu" = "no" && ! test "${linux} ${virglrenderer} ${gbm} ${want_tools}" = "yes yes yes yes";  then
++  pixman_cflags=
++  pixman_libs=
++elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
++  pixman_cflags=$($pkg_config --cflags pixman-1)
++  pixman_libs=$($pkg_config --libs pixman-1)
++else
++  error_exit "pixman >= 0.21.8 not present." \
++      "Please install the pixman devel package."
++fi
++
+ ##########################################
+ # libxml2 probe
+ if test "$libxml2" != "no" ; then
+-- 
+2.28.0
+