SecurityPkg/Tcg2Config: remove TPM2_ChangEPS if it is not supported.

SecurityPkg/Tcg2Config: remove TPM2_ChangEPS if it is not supported.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2793

In current implementation TPM2_ChangeEPS command is always available
in the TPM2 operation pull down list in TCG2 Configuration, which
is confusing when the command is not supported by specific TPM chip.
As a user experience improvement, TPM2_ChangeEPS command should be
removed from the list when it is not supported.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Qi Zhang <qi1.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>