FPC1020 Series Fingerprint Sensor Driver

Made a Linux kernel driver for the FPC1020 series fingerprint sensors. This involved creating a new kernel subsystem for fingerprint sensors and integrating it with Libfprint, the userspace component that handles authentication.

FPC1020 is a series of capacitive fingerprint sensors manufactured by Fingerprint Cards and commonly found in mobile devices. These sensors communicate through SPI and capture fingerprint images for on-device enrollment and authentication.