iwlwifi: convert the 9260-1x1 device to use the new parameters

The 9260-1x1 device can be differentiated using the PCI device ID.
There is a single occurrence of this device, so continue relying on
the device and subsystem device IDs.

The name of this device was incorrect, so add a new string
specifically for it.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.4d74e1be7cac.Id27bd9c878b73cb771691cbe6082fd40e079b44d@changeid