main/qtwebbrowser: disable armv7

qt5-qtwebengine is currently not available in Alpine edge.
[ci:skip-build], [ci:skip-vercheck]

Related: build.postmarketos.org#72

main/qtwebbrowser/APKBUILD

@@ -3,7 +3,7 @@ pkgver=1.0
 pkgrel=0
 pkgdesc="Qt web browser"
 url="http://doc.qt.io/QtWebBrowser/"
-arch="all !armhf" # armhf blocked by qt5-qtdeclarative
+arch="all !armhf !armv7" # armhf: pmaports#75, armv7: build.postmarketos.org#72
 license="GPLv3"
 depends="qt5-qtbase qt5-qtwebengine qt5-qtvirtualkeyboard mesa-dev"
 makedepends="qt5-qtbase-dev qt5-qtwebengine-dev busybox"