Add key ENCRYPTION_NO_VERIFY to conf

Add key ENCRYPTION_NO_VERIFY to conf

Add ENCRYPTION_NO_VERIFY config key and allow to disable checking
encryption status for given type of drives.

The key is introduced because of SATA Opal disks for which TPM commands
must be enabled in libata kernel module, (libata.allow_tpm=1), otherwise
it is impossible to verify encryption status. TPM commands are disabled by
default.

Currently the key only supports the "sata_opal" value, if necessary,
the functionality is ready to support more types of disks. This
functionality will be used in the next patches.

Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>