i2c: complete support for 10-bit addressing

[pabigot]

Despite the fact that PR #9334 moved 10-bit addressing flag to struct i2c_msg - this allows to use 10-bit addressing on a per message basis - the only function that takes struct i2c_msg as a parameter is i2c_transfer. No other function e.g. i2c_write, i2c_reg_read_byte allows to use 10-bit addressing. As such 10-bit addressing is not really supported by the API.

Originally posted by @mnkp in #4040 (comment)

[zephyrbot]

Hi @teburd,

This issue, marked as an Enhancement, was opened a while ago and did not get any traction. It was just assigned to you based on the labels. If you don't consider yourself the right person to address this issue, please re-assing it to the right person.

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