ARM: dts: qcom: ipq4018-ap120c-ac: use NVMEM for ath10k caldata

Since ath10k now supports loading the pre-cal via NVMEM instead of having
to use userspace scripts, lets use it.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230214161211.306462-4-robert.marko@sartura.hr