Added libp11 as dependency for rng-tools

PKGBUILD

+# Maintainer: Massimiliano Torromeo <massimiliano.torromeo@gmail.com>
+# Contributor: Brian Bidulock <bidulock@openss7.org>
+# Contributor: Timothy Redaelli <timothy.redaelli@gmail.com>
+# Contributor: kevku <kevku@msn.com>
+# Contributor: Rene Pärts <rene87@hot.ee>
+
+pkgname=libp11
+pkgver=0.4.9
+pkgrel=1
+pkgdesc="A library implementing a small layer on top of the PKCS11 API"
+arch=('i686' 'x86_64')
+url="https://github.com/OpenSC/libp11/wiki"
+license=('LGPL')
+depends=('openssl')
+source=("https://github.com/OpenSC/${pkgname}/releases/download/${pkgname}-${pkgver}/${pkgname}-${pkgver}.tar.gz"{,.asc})
+sha256sums=('9d1c76d74c21ca224f96204982097ebc6b956f645b2b0b5f9c502a20e9ffcfd8'
+            'SKIP')
+validpgpkeys=('AC915EA30645D9D3D4DAE4FEB1048932DD3AAAA3')
+
+
+build() {
+  cd "$pkgname-$pkgver"
+  ./configure --prefix=/usr --disable-static
+  make
+}
+
+package() {
+  cd "$pkgname-$pkgver"
+  make DESTDIR="$pkgdir/" install
+}