When deciding NVM type, if the HW type is unknown, report error and exit
with -ENOENT. This check should prevent incorrect behavior by assuming
the wrong NVM type.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>