main/qemu: enable virglrenderer

Allows qemu to use the host machine graphics adapter OpenGL capabilites.
Tested on postmarketOS running weston and X11 desktops (Xfce4, MATE)

main/qemu/APKBUILD

@@ -4,11 +4,12 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=qemu
 pkgver=3.1.0
-pkgrel=1
+pkgrel=2
 pkgdesc="QEMU is a generic machine emulator and virtualizer"
 url="http://qemu.org/"
 arch="all"
 license="GPL-2.0 LGPL-2"
+depends="virglrenderer"
 makedepends="
 	alsa-lib-dev
 	bison
@@ -40,6 +41,7 @@ makedepends="
 	usbredir-dev
 	util-linux-dev
 	vde2-dev
+	virglrenderer-dev
 	vte3-dev
 	xfsprogs-dev
 	zlib-dev
@@ -268,6 +270,7 @@ build() {
 		--enable-usb-redir \
 		--enable-vde \
 		--enable-vhost-net \
+		--enable-virglrenderer \
 		--enable-virtfs \
 		--enable-vnc \
 		--enable-vnc-jpeg \