main/abuild: Depend on patch

Some patches can only be applied with GNU patch (example: OpenSSH
aport), thus abuild needs to depend on patch.

See also: e4e72a78d0ea922149226c9880ed095dcd550118

main/abuild/APKBUILD

@@ -2,13 +2,13 @@
 pkgname=abuild
 pkgver=2.24.0
 _ver=${pkgver%_git*}
-pkgrel=7
+pkgrel=8
 pkgdesc="Script to build Alpine Packages"
 url="http://git.alpinelinux.org/cgit/abuild/"
 arch="all"
 license="GPL2"
 depends="fakeroot sudo pax-utils openssl apk-tools>=2.0.7-r1 libc-utils
-	attr tar pkgconf"
+	attr tar pkgconf patch"
 if [ "$CBUILD" = "$CHOST" ]; then
 	depends="$depends curl"
 fi