How to add correctly progmem MTDIOC_ERASESTATE call

[tito97sp]

MCUboot expects that the MTD driver for a given image partition handles the MTDIOC_ERASESTATE ioctl command.

The nucleo-h743zi does not implement this in the mtd_progmem device for using it with embedded flash.

Should I modify the stm32_flash.h to add something like up_progmem_erasestate() function and the mtd_progmem.c driver ioctl to support this functionality or there is other, best suited way?

Modifying mtd_progmem.c driver would affect every board and the migration could be difficult. I am thinking in a particular board oriented solution.