mount-encrypted: expprt nvram contents to tmpfs Export the NVRAM contents to tmpfs (/tmp) for use during boot without incurring the cost of repeated trips through the TPM. Signed-off-by: Will Drewry <[email protected]> BUG=chromium-os:37367 TEST=builds, boots, emits lockbox.nvram which validates using in-progress lockbox-cache BRANCH=none Change-Id: I8b1103f4bd22bd75e98a7617a571bdb3a06d2914 Previous-Reviewed-on: https://gerrit.chromium.org/gerrit/41433 Commit-Queue: Will Drewry <[email protected]> (cherry picked from commit 265e2f78dd46845253b683ca8367483c31ba3f4a) Reviewed-on: https://gerrit.chromium.org/gerrit/42114 Commit-Queue: Mattias Nissler <[email protected]> Reviewed-by: Mattias Nissler <[email protected]> Tested-by: Mattias Nissler <[email protected]>