iwlwifi: pnvm: print out the version properly

The version really is a git sha1, not a hex number, so we
need to print it out with leading zeroes (8 digits) and
without 0x prefix.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211017165728.83422182774a.I40703fd517534133eb67d644ee16532ba8a67e35@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>