samus: Add ACPI binding for rt5677 codec SPI

We'll need to find a real ACPI device ID for
the rt5677 SPI driver. "RT5677AA" is temporary.

BUG=chrome-os-partner:33495
BRANCH=samus
TEST=load firmware via SPI; hotword detection works

Change-Id: I6dc55c4641c27a38570debe841a6afeb048eb868
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: f0d7013b62c78deb82db1a431f079c79eded5270
Original-Change-Id: Ifb4a1b12776669e21c0b7c4679246717d72981ad
Original-Signed-off-by: Ben Zhang <benzh@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/235902
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/9486
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/google/samus/acpi/mainboard.asl

@@ -345,3 +345,29 @@ Scope (\_SB.PCI0.I2C1)
 		}
 	}
 }
+
+Scope (\_SB.PCI0.SPI0)
+{
+	Device (CODC)
+	{
+		// TODO: Need official HID.
+		Name (_HID, "RT5677AA")
+		Name (_UID, 1)
+		Name (_CRS, ResourceTemplate ()
+		{
+			SpiSerialBus (
+				0,                   // DeviceSelection (CS0?)
+				PolarityLow,         // DeviceSelectionPolarity
+				FourWireMode,        // WireMode
+				8,                   // DataBitLength
+				ControllerInitiated, // SlaveMode
+				1000000,             // ConnectionSpeed (1MHz)
+				ClockPolarityLow,    // ClockPolarity
+				ClockPhaseFirst,     // ClockPhase
+				"\\_SB.PCI0.SPI0",   // ResourceSource
+				0,                   // ResourceSourceIndex
+				ResourceConsumer,    // ResourceUsage
+			)
+		})
+	}
+}