Updated the build containers to simplify the build process and not
require us to install things at build time.

This reverts commit ff30fa81. This was
actually incorrect as it was generated against a non-1.2.0 header.

Re-implement 7b608d55 since bindgen is
still broken and when I re-generated the bindings with the newer version
of bindgen this fix got undone.

Merged the TPM 1.2 and TPM 2.0 containers into one so switch to that.

bindgen -o src/bindings.rs -lsapi --rust-target "1.0" \
--blacklist-type max_align_t --with-derive-default \
wrapper.h -I ../tpm2-tss/include

improve errors and expose TpmErrorKind

See merge request !8

fix the building with feature flags and add a test

See merge request !7

Complete NV ops

See merge request !6

Allows the user the read lock an NvRamArea.

When creating the NvRamArea, we can set an NvRamArea password that can
be used for further authentication. This exposes the ability to set that
password.

Instead of hardcoding the auth type handle to owner instead allow the
user to specify owner or platform.

Added the ability to undefine an NvRamArea, along with an example named
nvrelease to match the upstream utility name.

Implemented Read for NvRamArea so that it is possible to read from an
NvRamArea

Instead of implementing a custom write function for the NvRamArea, this
implements the Write and Seek traits so that standard operations can
happen on an NvRamArea.

When we create TPM2B based types from existing data we need to ensure
that we will not cause a buffer overflow. To make this more ergonomic,
use the try_from crate to implement this.

For future methods to work, we need to store the Context inside of the
NvRamArea.

create a utils module for easy creation of a context from the env

See merge request !4

cleanups and add ability to define NVRAM regions

See merge request !3

Extend the tests to define an NVRAM region and show it.

Added a define() method on NvRamArea to allow the ability to define an
NVRAM index.

TPMA_SESSION is a C union that is the same size as an uint8_t but
bindgen believes its a uint32_t which is resulting in the wrong padding
behavior.