SecurityPkg: Change OPTIONAL keyword usage style

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3760

Update all use of ', OPTIONAL' to ' OPTIONAL,' for function params.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>

SecurityPkg/Library/Tpm2CommandLib/Tpm2Hierarchy.c

@@ -305,7 +305,7 @@ EFI_STATUS
 EFIAPI
 Tpm2ClearControl (
   IN TPMI_RH_CLEAR             AuthHandle,
-  IN TPMS_AUTH_COMMAND         *AuthSession, OPTIONAL
+  IN TPMS_AUTH_COMMAND         *AuthSession  OPTIONAL,
   IN TPMI_YES_NO               Disable
   )
 {