luna-core-apps: only build for x86_64 (indirect depend is qt5-qtwebengine)

aports/luna/luna-core-apps/APKBUILD

@@ -3,7 +3,8 @@ pkgver=1.0.5_git20170804
 pkgrel=1
 _commit=da721460474039a2412dc6f47a2e8464e38fc6fd
 pkgdesc="The new webOS UI of the webOS ports project."
-arch="all"
+# Disabled for armhf, aarch64 (see #1008)
+arch="x86_64"
 url="http://webos-ports.org"
 license="GPL-3.0+"
 depends="luna-webappmanager enyo luna-app-services"
@@ -12,7 +13,6 @@ source="$pkgname-$_commit.tar.gz::https://github.com/webOS-ports/core-apps/archi
 builddir="$srcdir/core-apps-$_commit"
 
 package() {
-	
 	cd "$builddir"
 
 	install -d "$pkgdir"/usr/palm/applications