tpm, tpm_crb: use BIT()

Replaced bitfiels with constants and BIT().

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
tpm, tpm_crb: use tpm_chip_unregister()

Use tpm_chip_unregister() in tpm_crb because tpm_remove_hardware()
is deprecated.

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