qemu: split qemu-ga as they are never used together.

srcpkgs/qemu/template

@@ -1,7 +1,7 @@
 # Template file for 'qemu'
 pkgname=qemu
 version=2.7.0
-revision=3
+revision=4
 short_desc="Open Source Processor Emulator"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="http://qemu.org"
@@ -88,4 +88,14 @@ do_install() {
 	make DESTDIR=${DESTDIR} install
 	# qemu-bridge-helper must be setuid for non privileged users.
 	chmod u+s ${DESTDIR}/usr/libexec/qemu-bridge-helper
+
+	vsv qemu-ga
+}
+
+qemu-ga_package() {
+	short_desc+="QEMU Guest Agent"
+	pkg_install() {
+		vmove usr/bin/qemu-ga
+		vmove etc/sv/qemu-ga
+	}
 }