Merge changes from topic "ld/mtd_framework" into integration

Merge changes from topic "ld/mtd_framework" into integration

* changes:
  doc: stm32mp1: Update build command line
  fdts: stm32mp1: remove second QSPI flash instance
  stm32mp1: Add support for SPI-NOR boot device
  stm32mp1: Add support for SPI-NAND boot device
  spi: stm32_qspi: Add QSPI support
  fdts: stm32mp1: update for FMC2 pin muxing
  stm32mp1: Add support for raw NAND boot device
  fmc: stm32_fmc2_nand: Add FMC2 driver support
  stm32mp1: Reduce MAX_XLAT_TABLES to 4
  io: stm32image: fix device_size type
  stm32mp: add DT helper for reg by name
  stm32mp1: add compilation flags for boot devices
  lib: utils_def: add CLAMP macro
  compiler_rt: Import popcountdi2.c and popcountsi2.c files
  Add SPI-NOR framework
  Add SPI-NAND framework
  Add SPI-MEM framework
  Add raw NAND framework