Add NVMEM cell for FMD_CONT_AFTER_PON to provide the option to prevent
FMD(find-my-device) feature disablement on PON trigger.
0 - Disable FMD feature on PON.
1 - Keep FMD feature enabled on PON.
Change-Id: I5e5386867546aacf526fe7be65e1e1e1ece30ffc
Signed-off-by: Kamal Wadhwa <quic_kamalw@quicinc.com>