Add a DT binding document for the ICSS Industrial Ethernet Peripheral(IEP)
hardware. IEP supports packet timestamping, PTP and PPS.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>