ArmVirtPkg/ArmVirtQemu: enable the TPM2 configuration module

ArmVirtPkg/ArmVirtQemu: enable the TPM2 configuration module

Enable the DXE phase component that publishes the HII pages and
associated logic to enable TPM2 parameters to be configured by
the user via the setup menu.

This patch ports (parts of) the following commits to ArmVirtQemu:

- 3103389043bd ("OvmfPkg: Add TCG2 Configuration menu to the Device
                Manager menu", 2019-02-11)

- cf3ad972a210 ("OvmfPkg: reorganize TPM2 support in DSC/FDF files",
                2020-01-09)

- f55477fe2d62 ("OvmfPkg: use HII type PCDs for TPM2 config related
                variables", 2020-01-09)

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2560
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>