Add PhysicalDisable command.

src/tlcl/tlcl.h

Index: src/tlcl/tlcl.h
diff --git a/src/tlcl/tlcl.h b/src/tlcl/tlcl.h
index e170cb8b8b8f62f2ef9a35ee0125a7bb29848730..570d884178fa7a4b5b7fb0594286924a1b123676 100644
--- a/src/tlcl/tlcl.h
+++ b/src/tlcl/tlcl.h
@@ -127,10 +127,14 @@ int TlclIsOwned(void);
  */
 uint32_t TlclForceClear(void);
 
-/* Issues a SetEnable.  The TPM error code is returned.
+/* Issues a PhysicalEnable.  The TPM error code is returned.
  */
 uint32_t TlclSetEnable(void);
 
+/* Issues a PhysicalDisable.  The TPM error code is returned.
+ */
+uint32_t TlclClearEnable(void);
+
 /* Issues a SetDeactivated.  Pass 0 to activate.  Returns result code.
  */
 uint32_t TlclSetDeactivated(uint8_t flag);