ARM: socfpga: dts: Add tx-fifo-depth and rx-fifo-depth properties

Add tx-fifo-depth and rx-fifo-depth devicetree properties for socfpga
stmmac. These devicetree properties will be used to configure certain
features of the stmmac on the socfpga.
Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>

arch/arm/boot/dts/socfpga.dtsi

@@ -496,6 +496,8 @@ gmac0: ethernet@ff700000 {
 			reset-names = "stmmaceth";
 			snps,multicast-filter-bins = <256>;
 			snps,perfect-filter-entries = <128>;
+			tx-fifo-depth = <4096>;
+			rx-fifo-depth = <4096>;
 			status = "disabled";
 		};
 
@@ -512,6 +514,8 @@ gmac1: ethernet@ff702000 {
 			reset-names = "stmmaceth";
 			snps,multicast-filter-bins = <256>;
 			snps,perfect-filter-entries = <128>;
+			tx-fifo-depth = <4096>;
+			rx-fifo-depth = <4096>;
 			status = "disabled";
 		};
 

arch/arm/boot/dts/socfpga_arria10.dtsi

@@ -130,6 +130,8 @@ gmac1: ethernet@ff802000 {
 			mac-address = [00 00 00 00 00 00];
 			snps,multicast-filter-bins = <256>;
 			snps,perfect-filter-entries = <128>;
+			tx-fifo-depth = <4096>;
+			rx-fifo-depth = <16384>;
 			status = "disabled";
 		};
 
@@ -142,6 +144,8 @@ gmac2: ethernet@ff804000 {
 			mac-address = [00 00 00 00 00 00];
 			snps,multicast-filter-bins = <256>;
 			snps,perfect-filter-entries = <128>;
+			tx-fifo-depth = <4096>;
+			rx-fifo-depth = <16384>;
 			status = "disabled";
 		};