The flexcomm peripheral on lpc socs can be configured into uart, spi,
i2c, or i2s mode. Introduce a shared device tree binding that gets
included by the more specific driver type bindings.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
Adds i2c device tree bindings and nodes for the lpc54xxx and lpc55s6x
socs in preparation for adding a new i2c driver.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>