acpi-tables: control defines through ACPI_FEATURES
acpi-tables: control defines through ACPI_FEATURES

This creates a variable ACPI_FEATURES which set defines for uart_2w uart_4w spi and i2c.
This can be used in the machines conf file to control defines while building tables.

Signed-off-by: Ferry Toth <b7ff6f7d33f1b320413095ad62cad5fa92c49512@exalondelft.nl>

westeri/meta-acpi,westeri/meta-acpi