main/gtk+3.0: support broadway backend

update configure to support broadway backend

Closes GH-10571

main/gtk+3.0/APKBUILD

@@ -3,7 +3,7 @@
 # Maintainer: Rasmus Thomsen <oss@cogitri.dev>
 pkgname=gtk+3.0
 pkgver=3.24.11
-pkgrel=0
+pkgrel=1
 pkgdesc="The GTK+ Toolkit (v3)"
 url="https://www.gtk.org/"
 install="$pkgname.post-install $pkgname.post-upgrade $pkgname.post-deinstall"
@@ -85,7 +85,8 @@ build() {
 		--enable-xcomposite \
 		--enable-xdamage \
 		--enable-x11-backend \
-		--enable-wayland-backend
+		--enable-wayland-backend \
+		--enable-broadway-backend
 
 	# https://bugzilla.gnome.org/show_bug.cgi?id=655517
 	sed -i 's/ -shared / -Wl,-O1,--as-needed\0/g' libtool