OvmfPkg/Tcg2ConfigPei: Update Depex for IA32 and X64
    
    BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3345
    
    The OVMF Tcg2Config PEIM adds the gOvmfTpmMmioAccessiblePpiGuid as a
    Depex for IA32 and X64 builds so that the MMIO range is properly mapped
    as unencrypted for an SEV-ES guest before the Tcg2Config PEIM is loaded.
    
    Cc: Laszlo Ersek <lersek@redhat.com>
    Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
    Cc: Jordan Justen <jordan.l.justen@intel.com>
    Cc: Brijesh Singh <brijesh.singh@amd.com>
    Cc: Erdem Aktas <erdemaktas@google.com>
    Cc: James Bottomley <jejb@linux.ibm.com>
    Cc: Jiewen Yao <jiewen.yao@intel.com>
    Cc: Min Xu <min.m.xu@intel.com>
    Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
    Cc: Stefan Berger <stefanb@linux.ibm.com>
    Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
    Message-Id: <d6538e6c557173d260e272a0e5659683175e2e06.1619716333.git.thomas.lendacky@amd.com>
    Reviewed-by: Laszlo Ersek <lersek@redhat.com>