tpm: clean up tpm_tis driver life-cycle

Updated tpm_tis to properly use tpm-chip API instead of using ad hoc
methods. tpm_chip_unregister() is called on remove event when PNP driver
is used and on module removal when platform driver is used.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
tpm: TPM 2.0 commands

This patch contains the following internal helper functions for
tpm.ko:

- tpm2_get_random()
- tpm2_get_tpm_pt()
- tpm2_pcr_extend()
- tpm2_pcr_read()
- tpm2_startup()

And the following exported functions for implementing new device
drivers.

- tpm2_do_selftest()
- tpm2_calc_ordinal_durations()
- tpm2_gen_interrupt()

All the functions defined in include/linux/tpm.h have been added
a routing for TPM2 counter parts.

The code for tpm2_gen_interrupt(), tpm2_calc_ordinal_duration()
and tpm2_startup() is derived from the code originally made by
Will Arthur.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Will Arthur <will.c.arthur@intel.com>
tpm: TPM 2.0 sysfs attributes

Implemented sysfs attributes for TPM2 devices.

Documentation/ABI/stable/sysfs-class/tpm2 contains descriptions
of these attributes.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
tpm: TPM 2.0 CRB Interface

tpm_crb is a driver for TPM 2.0 Command Response Buffer (CRB) Interface
as defined in PC Client Platform TPM Profile (PTP) Specification.

Only polling and single locality is supported as these are the limitations
of the available hardware, Platform Trust Techonlogy (PTT) in Haswell
CPUs.

The driver always applies CRB with ACPI start because PTT reports using
only ACPI start as start method but as a result of my testing it requires
also CRB start.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>