wifi: iwlwifi: mvm: remove h from printk format specifier

This change fixes the checkpatch warning described in this commit
commit cbacb5ab

 ("docs: printk-formats: Stop encouraging use of
  unnecessary %h[xudi] and %hh[xudi]")

Standard integer promotion is already done and %hx and %hhx is useless
so do not encourage the use of %hh[xudi] or %h[xudi].

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20230127002430.a25158d58fd7.Ibfe217f12a63c1d5349218e74c4b802c70c13c7c@changeid
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>