RMX1831: Fix fp clearing after reboot issue.

[LokeshV790]

No description provided.

[phhusson]

getprop persist.sys.phh.fingerprint.nocleanup | grep -q -i -e realme/RMX1831

this can't work -_-'
you need to check based on your device's properties, not something you're going to set

[LokeshV790]

@phhusson sir we tried each fix none worked for fixing fp cleaning issue this line was helpful earlier for fix so i pulled request...