temp/ofono: build with a single thread only (MR 1637)

For some reason, the ModemManager build tends to freeze when built
with QEMU user emulation for arm*. Changing the build to use a single
thread only (-j1) avoids that, although the build is slower of course.

The same thing seems to happen fo oFono as well, so set that to -j1 too.

Also limit building to "armhf armv7 aarch64" since the forks are not
needed on any other architectures, to reduce build times a bit. The
other architectures can just use the upstream packages from Alpine.

temp/ofono/APKBUILD

@@ -6,7 +6,7 @@ _pkgver=1.31
 pkgrel=6
 pkgdesc="Infrastructure for building mobile telephony (GSM/UMTS) applications [$_pkgver]"
 url="https://01.org/ofono"
-arch="all"
+arch="armhf armv7 aarch64"
 license="GPL-2.0-only"
 depends="bluez mobile-broadband-provider-info"
 makedepends="glib-dev dbus-dev ell-dev eudev-dev
@@ -30,6 +30,10 @@ source="https://www.kernel.org/pub/linux/network/ofono/ofono-$_pkgver.tar.xz
 	ofono-wheel.conf"
 builddir="$srcdir/$pkgname-$_pkgver"
 
+# Workaround build freeze with QEMU user emulation
+export JOBS=1
+export MAKEFLAGS=-j$JOBS
+
 prepare() {
 	default_prepare
 	autoreconf -fi