ath10k Wave-2 hardware requires an nvmem-cell called "pre-calibration"
to load the device specific caldata, not "calibration".
Update the nvmem-cell name to make the 5GHz radio work again.
Fixes: d4b3b23942 ("ath79: TP-Link EAP245 v3: convert radios to nvmem-cells")
Signed-off-by: Sander Vanheule <sander@svanheule.net>