tpm: Wait for tpmRegValidSts flag on CRB interface before probing

Wait for the tpmRegValidSts flag on the TPM_LOC_STATE_x register to
be set; we expect the locAssigned flag to not be set.

Real hardware seems to set the tpmRegValidSts flag without for
example requesting access to a locality.

Tested-by: Stephen Douthit <stephend@silicom-usa.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
1 file changed
tree: b0fe7adfcb8ed8c4a4f2c34b8552c70d9b8829d5
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