tcg2: decouple eventlog size from efi

Move default eventlog size from efi to tpm for using in both
efi and measured boot.

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/drivers/tpm/Kconfig b/drivers/tpm/Kconfig
index d59102d..01bc686 100644
--- a/drivers/tpm/Kconfig
+++ b/drivers/tpm/Kconfig
@@ -209,6 +209,15 @@
 	  to the device using the standard TPM Interface Specification (TIS)
 	  protocol.
 
+config TPM2_EVENT_LOG_SIZE
+	int "EventLog size"
+	depends on TPM_V2
+	default 65536
+	help
+	  Define the size of the EventLog. Note that this is going to be
+	  allocated twice. One for the eventlog it self and one for the
+	  configuration table that is required from the TCG2 spec
+
 endif # TPM_V2
 
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