const qualifier lost on some device config_info casts

[pabigot]

The object pointed to by the config_info field of struct device is const qualified, but some conversions of that object to a driver-specific type discard the qualifier. This is a violation of MISRA 11.8 as it produces undefined behavior.

[pabigot]

The fixes for this in #25208 have revealed multiple drivers that mutate the content of the config structure. Drivers and corresponding issues are:

• serial/uart_ns16550.c drivers: uart_ns16550: device config_info content mutated #25260
• i2c/i2c_nios2.c drivers: i2c_nios2: device config_info content mutated #25258
• dma/dma_nios2_msgdma.c drivers: audio: dma_nios2_msgdma: device config_info content mutated #25257
• audio/tlv320dac310x.c drivers: audio: tlv320dac310x: device config_info content mutated #25256
• i2c_gecko.c drivers: i2c: gecko: device config_info content mutated #25255

The fixes those drivers have been removed from #25248 but are available from the corresponding issues for maintainers to use while fixing the drivers.