testing/armagetronad: fix build

Failed due to sdl-config not being available. This command seems to be
packaged in sdl12-compat-dev which probably previously was a transitive
dependency.

testing/armagetronad/APKBUILD

@@ -7,7 +7,7 @@ pkgdesc="A Tron Clone in 3D."
 url="http://armagetronad.net/"
 arch="all"
 license="GPL-1.0-only"
-makedepends="sdl_image-dev sdl_mixer-dev ftgl-dev libxml2-dev"
+makedepends="sdl_image-dev sdl_mixer-dev ftgl-dev libxml2-dev sdl12-compat-dev"
 subpackages="$pkgname-doc"
 options="!check" #the tests are deactivated because the make check has not been declared
 source="https://launchpad.net/armagetronad/${pkgver%.*.*}/$pkgver/+download/armagetronad-$pkgver.src.tar.gz"