[U-Boot] [RFC] CONFIG naming convetion

Hi all,

Currently we have a mess in the drivers CONFIG naming convention as example on I2C we have CONFIG_I2C_XXXXX CONFIG_DRIVER_XXX_I2C CONFIG_XXXX_I2C CONFIG_SYS_I2C_XXXX

I think it will good to have common and clean naming convention so I'll propose we use this one CONFIG_namespace_XXXXX and CONFIG_SYS_namespace_XXXXX

so it will resutly for I2C to this

CONFIG_I2C_XXXXX CONFIG_SYS_I2C_XXXX

and the Makefile and KConfig it will be easier to sort and read

Best Regards, J.