ARM: dts: at91: sama5d2: enable FIFOs for high-speed i2c controllers

This patch enables the RX and TX FIFOs (16 data each) of the two
high-speed i2c controllers (i2c0 and i2c1).
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

arch/arm/boot/dts/sama5d2.dtsi

@@ -1030,6 +1030,7 @@ AT91_XDMAC_DT_PERID(0))>,
 				#address-cells = <1>;
 				#size-cells = <0>;
 				clocks = <&twi0_clk>;
+				atmel,fifo-size = <16>;
 				status = "disabled";
 			};
 
@@ -1231,6 +1232,7 @@ AT91_XDMAC_DT_PERID(2))>,
 				#address-cells = <1>;
 				#size-cells = <0>;
 				clocks = <&twi1_clk>;
+				atmel,fifo-size = <16>;
 				status = "disabled";
 			};