regmap-i2c: add SMBus byte/word reg16 bus for adapters lacking I2C_FUNC_I2C#550

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nissampa wants to merge 3 commits intosonic-net:masterfrom

nissampa:at24_smbus

Commits on Apr 3, 2026

at24: SMBus fallback for both 16-bit and 8-bit EEPROMs on PIIX4
nissampa
committed

Commits on Apr 4, 2026

at24: fix smbus_config indentation and add blank line after declaration
nissampa
committed

Commits on Apr 10, 2026

regmap-i2c: replace at24 SMBus fallback with regmap-level fix
nissampa
committed