iwlwifi: remove trailing semicolon in macro definition

The macro use will already have a semicolon.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802172232.3db450ebbb3c.Ic63f85b85a043256318da49d7b5a63f7dddf3986@changeid


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