tpm: add TPM2_Shutdown command

TPM2_shutdown command is sharing same structure and logics with
TPM2_startup, thus this patch extends the existing startup APIs and
cmd functions to support shutdown instead of created new ones.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/include/tpm-v2.h b/include/tpm-v2.h
index 6568146..f66a8e1 100644
--- a/include/tpm-v2.h
+++ b/include/tpm-v2.h
@@ -230,6 +230,7 @@
 	TPM2_CC_PCR_READ	= 0x017E,
 	TPM2_CC_PCR_EXTEND	= 0x0182,
 	TPM2_CC_PCR_SETAUTHVAL	= 0x0183,
+	TPM2_CC_SHUTDOWN	= 0x0145,
 };
 
 /**
@@ -430,7 +431,7 @@
  *
  * Return: code of the operation
  */
-u32 tpm2_startup(struct udevice *dev, enum tpm2_startup_types mode);
+u32 tpm2_startup(struct udevice *dev, bool onoff, enum tpm2_startup_types mode);
 
 /**
  * Issue a TPM2_SelfTest command.