ArmVirtPkg/ArmVirtQemu: enable the DXE phase TPM2 support module

ArmVirtPkg/ArmVirtQemu: enable the DXE phase TPM2 support module

Enable the TPM2 support module in the DXE phase, and the associated
libraries and PCDs that it requires. This will be wired into the
measured boot support code in a subsequent patch.

Note that Tcg2Dxe.inf is added to ArmVirtQemuFvMain.fdf.inc, which
is shared with other platforms in ArmVirtPkg, but as those will not
set the TPM2_ENABLE define, this change does not affect them.

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

- 0c0a50d6b3ff ("OvmfPkg: include Tcg2Dxe module", 2018-03-09)

- b9777bb42e4f ("OvmfPkg: add Tcg2PhysicalPresenceLibQemu", 2018-05-22)
               -- only to match OVMF's current lib class resolutions

- 1ec05b81e59f ("OvmfPkg: use DxeTpmMeasurementLib if and only if
                TPM2_ENABLE", 2019-07-04)

- b9130c866dc0 ("OvmfPkg: link Sha384 and Sha512 support into Tcg2Pei
                and Tcg2Dxe", 2018-08-16)

- 5d3ef15da7c3 ("OvmfPkg: link SM3 support into Tcg2Pei and Tcg2Dxe",
                2019-07-19)

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>