log: no format for the short arrays in 'hex-dump'
pkcs15: unify error codes of 'internal' and 'syntetic' binds

if no valid PKCS#15 file system found
  'internal' bind procedure returns 'non-supported-card' error
  the same as 'syntetic' bind procedure.
  this return code is used by pkcs11 framework to accept non-binded cards

some codding style issues