Following #11180, some CONFIG_ symbols of devices already converted to DTS remains in dts_fixup.h files:
CONFIG_I2C_X_NAME
CONFIG_SPI_X_IRQ_PRI
There are other devices impacted, like ADC, WDT... but they might not all be available in DTS.
This is different for I2C and SPI as they are available in dts and the other properties are already converted to DT_ namespace.
It apprears theyare still using CONFIG_ because they are defined in Kconfig files.
So netx steps is to remove these symbols from Kconfig and changes definitins from CONFIG_ to DT_