board: sensry: sy1xx: default slew-rate for rgmii interface

Set default slew-rate of tx pins of rgmii interfaces to 16pf.

Signed-off-by: Sven Ginka <s.ginka@sensry.de>

Author: tswaehn

boards/sensry/ganymed_bob/ganymed_bob_sy120-pinctrl.dtsi

@@ -114,26 +114,32 @@
 
 	/omit-if-no-ref/ rgmii_tx_ctl: rgmii_tx_ctl {
 		pinmux = <SY1XX_RGMII0_PAD_CFG0 SY1XX_PAD(2)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_tx_clk: rgmii_tx_clk {
 		pinmux = <SY1XX_RGMII0_PAD_CFG0 SY1XX_PAD(3)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd0: rgmii_txd0 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(0)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd1: rgmii_txd1 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(1)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd2: rgmii_txd2 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(2)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd3: rgmii_txd3 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(3)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_rxd0: rgmii_rxd0 {

boards/sensry/ganymed_sk/ganymed_sk_sy120-pinctrl.dtsi

@@ -114,26 +114,32 @@
 
 	/omit-if-no-ref/ rgmii_tx_ctl: rgmii_tx_ctl {
 		pinmux = <SY1XX_RGMII0_PAD_CFG0 SY1XX_PAD(2)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_tx_clk: rgmii_tx_clk {
 		pinmux = <SY1XX_RGMII0_PAD_CFG0 SY1XX_PAD(3)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd0: rgmii_txd0 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(0)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd1: rgmii_txd1 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(1)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd2: rgmii_txd2 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(2)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_txd3: rgmii_txd3 {
 		pinmux = <SY1XX_RGMII0_PAD_CFG1 SY1XX_PAD(3)>;
+		slew-rate = <3>;
 	};
 
 	/omit-if-no-ref/ rgmii_rxd0: rgmii_rxd0 {