ANDROID: Add TPM support and the vTPM proxy to Cuttlefish.

This module allows presenting the kernel TPM interface while proxying
the TPM commands into a file descriptor. The module was originally
implemented to support running a TPM simulator on the same host system
and exposing a kernel TPM interface to a Linux container, but it is also
a convenient incremental step while we figure out our long-term strategy
with crosvm, which does not have TPM support following the same
standards as qemu.

Implicitly enables SECURITYFS via 'selects' from these new drivers.

Bug: 148102533
Test: Build and run locally with cuttlefish, check for /dev/vtpmx
Change-Id: I568a50c2ecb7899aae70e7a20efaedc84443511d
Signed-off-by: A. Cody Schuffelen <schuffelen@google.com>