[PATCH v4 1/2] i2c: qup: add ACPI support

[Timur Tabi]

Mika Westerberg wrote:
> Use has_acpi_companion() if you need to.

Is has_acpi_companion() the preferred alternative to ACPI_HANDLE()?  We 
frequently need to write code that does something different on ACPI vs 
DT, and there doesn't appear to be much consistency on how that's handled.

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