Add BhyvePkg, to support the bhyve hypervisor

BhyvePkg supports the bhyve hypervisor, which is a hypervisor/virtual
machine manager available on FreeBSD, macOS and Illumos.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Message-Id: <20200713054131.479627-2-rebecca@bsdio.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>

OvmfPkg/Bhyve/PlatformPei/FeatureControl.c

@@ -0,0 +1,21 @@
+/**@file
+  Install a callback when necessary for setting the Feature Control MSR on all
+  processors.
+
+  Copyright (C) 2020, Rebecca Cran <rebecca@bsdio.com>
+  Copyright (C) 2016, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "Platform.h"
+
+VOID
+InstallFeatureControlCallback (
+  VOID
+  )
+{
+  //
+  // Nothing to do.
+  //
+}