ARM: dts: am335x-phycore-som: Remove underscore in node names.

Remove underscore in node names following conventions.
Signed-off-by: Steffen Hemer <s.hemer@phytec.de>
Message-Id: <20230214132302.39087-6-s.hemer@phytec.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-phycore-som.dtsi

@@ -49,7 +49,7 @@ &sham {
 
 /* EMMC */
 &am33xx_pinmux {
-	emmc_pins: pinmux_emmc_pins {
+	emmc_pins: pinmux-emmc-pins {
 		pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN1, PIN_INPUT_PULLUP, MUX_MODE2)	/* gpmc_csn1.mmc1_clk */
 			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN2, PIN_INPUT_PULLUP, MUX_MODE2)	/* gpmc_csn2.mmc1_cmd */
@@ -125,7 +125,7 @@ &mac_sw {
 
 /* I2C Busses */
 &am33xx_pinmux {
-	i2c0_pins: pinmux_i2c0 {
+	i2c0_pins: pinmux-i2c0 {
 		pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_I2C0_SDA, PIN_INPUT, MUX_MODE0)
 			AM33XX_PADCONF(AM335X_PIN_I2C0_SCL, PIN_INPUT, MUX_MODE0)
@@ -165,7 +165,7 @@ i2c_rtc: rtc@68 {
 
 /* NAND memory */
 &am33xx_pinmux {
-		nandflash_pins: pinmux_nandflash {
+		nandflash_pins: pinmux-nandflash {
 			pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_GPMC_AD0, PIN_INPUT_PULLUP, MUX_MODE0)
 			AM33XX_PADCONF(AM335X_PIN_GPMC_AD1, PIN_INPUT_PULLUP, MUX_MODE0)
@@ -317,7 +317,7 @@ vmmc_reg: regulator@12 {
 
 /* SPI Busses */
 &am33xx_pinmux {
-	spi0_pins: pinmux_spi0 {
+	spi0_pins: pinmux-spi0 {
 		pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT_PULLDOWN, MUX_MODE0)
 			AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_INPUT_PULLDOWN, MUX_MODE0)