Support aarch64 for qemu-user-static

PKGBUILD.patch

--- PKGBUILD	2018-08-31 02:30:42.954132382 +0800
+++ PKGBUILD.after	2018-08-31 02:36:12.363488755 +0800
@@ -5,7 +5,7 @@
 pkgver=2.12
 pkgrel=4
 pkgdesc="A generic and open source processor emulator which achieves a good emulation speed by using dynamic translation, statically linked."
-arch=('i686' 'x86_64')
+arch=('i686' 'x86_64' 'aarch64')
 license=('GPL2' 'LGPL2.1')
 url="http://wiki.qemu.org/Index.html"
 depends=()
@@ -13,10 +13,12 @@
 conflicts=()
 _arch=amd64
 [ "$CARCH" = 'i686' ] && _arch=i386
+[ "$CARCH" = 'aarch64' ] && _arch=arm64
 _debsrc=${pkgname}_${pkgver}+dfsg-3_${_arch}.deb
 source=(http://ftp.debian.org/debian/pool/main/q/qemu/${_debsrc})
 sha1sums=('ac8defaa5b8624bc0585877f6272e23be921a70a')
 [ "$CARCH" = 'i686' ] && sha1sums=('b67bd47793047ddcbd79822bdaf297d0f3e99384')
+[ "$CARCH" = 'aarch64' ] && sha1sums=('eafb3efe2b485c96820cde0bbefe8ced9443d965')
 
 prepare() {
   cd "$srcdir"