iwlwifi: 7000: fix reported firmware name for 7265D

[ Upstream commit a443f5e1

 ]

We were advertising iwlwifi-7265-X.ucode instead of
iwlwifi-7265D-X.ucode. Fix this.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>