Call tpm_chip_start() and tpm_chip_stop() in

* tpm_chip_register()
* tpm_class_shutdown()
* tpm_del_char_device()
* tpm_pm_suspend()
* tpm_try_get_ops() and tpm_put_ops()
* tpm2_del_space()

And remove these calls from tpm_transmit(). The core reason for this
change is that in tpm_vtpm_proxy a locality change requires a virtual
TPM command (a command made up just for that driver).

The consequence of this is that this commit removes the remaining nested
calls.
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: NStefan Berger <stefanb@linux.ibm.com>
Tested-by: NStefan Berger <stefanb@linux.ibm.com>
Reviewed-by: NJerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: NAlexander Steffen <Alexander.Steffen@infineon.com>