iwlwifi: pcie: remove spaces from queue names

If we use spaces in the queue names, we get files with spaces in their
name in procfs, which is ugly.  Remove the spaces.

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802172232.0ef8aedd4f9b.If527b9ae5bf8de8c6877d4b6a21ed8d81b0f877e@changeid


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