tpm_manager: Add an implementation for TpmNvram for Tpm2.0

This CL implements the TpmNvram interface for Tpm2.0

Bug: 24059574
TEST=FEATURES=test USE=tpm2 emerge-rambi tpm_manager
TEST=ran nvram methods on an owned tpm2.0

Change-Id: Ic803d6e6fb18362a53708fd6051c1afdf581a9d3
5 files changed