ABI: sysfs: add documentation for ST M24LR EEPROM and control interface

Add sysfs ABI documentation for the STMicroelectronics M24LR device,
covering both the control interface (e.g., unlock, password update, UID,
total sectors, and SSS entries) and EEPROM access via the nvmem subsystem.

Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Link: https://lore.kernel.org/r/20250717063934.5083-4-abd.masalkhi@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>