arm64: dts: ti: k3-am62-verdin: Fix SPI_1 GPIO CS pinctrl label

Fix SPI_1_CS GPIO pinmux label, this is spi1_cs, not qspi1_io4.

There are no user of this label yet, therefore this change does not
create any compatibility issue.

Fixes: fcb3359 ("arm64: dts: ti: verdin-am62: Improve spi1 chip-select pinctrl")
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260324093705.26730-3-francesco@dolcini.it
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Author: dolcini

arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi

@@ -278,7 +278,7 @@
 	};
 
 	/* Verdin SPI_1 CS as GPIO */
-	pinctrl_qspi1_io4_gpio: main-gpio0-7-default-pins {
+	pinctrl_spi1_cs_gpio: main-gpio0-7-default-pins {
 		pinctrl-single,pins = <
 			AM62X_IOPAD(0x001c, PIN_INPUT, 7) /* (J23) OSPI0_D4.GPIO0_7 */ /* SODIMM 202 */
 		>;