In cap_t the size of the type bool is assumed to be one byte. This
commit sorts out the issue by changing the type to u8.

Fixes: c659af78 ("tpm: Check size of response before accessing data")
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>