OvmfPkg: Add TCG2 Configuration menu to the Device Manager menu

OvmfPkg: Add TCG2 Configuration menu to the Device Manager menu

This patch adds the TCG2 Configuration menu to the Device Manager
menu. We can apparently reuse the sample Tcg2ConfigDxe from
SecurityPkg/Tcg/Tcg2Config without obvious adverse effects. The
added TCG2 Configuration menu now shows details about the attached
TPM 2.0 and lets one for example configure the active PCR banks
or issue commands, among other things.

The code is added to Ovmf by building with -DTPM2_ENABLE and
-DTPM2_CONFIG_ENABLE.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>