iwlwifi: pcie: remove CSR_HW_RF_ID_TYPE_CHIP_ID

This is duplicated with CSR_HW_RFID_TYPE so just use the latter
for less typing/shorter lines.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210612142637.00b220f4ba53.I1fe216a46e7d9c1316d681daa293064f16ff1899@changeid


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