ARM: dts: exynos: override pins by label in Peach Pi

Using node paths to extend or override a device tree node is error
prone.  If there was a typo error, a new node will be created instead of
extending the existing node.  This will lead to run-time errors that
could be hard to detect.

A mistyped label on the other hand, will cause a dtc compile error
(during build time).
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: NAlim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220111201722.327219-1-krzysztof.kozlowski@canonical.com

arch/arm/boot/dts/exynos5800-peach-pi.dts

@@ -850,27 +850,26 @@
 	};
 };
 
-&pinctrl_1 {
-	/* Adjust WiFi drive strengths lower for EMI */
-	sd1_clk: sd1-clk {
-		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
-	};
+/* pinctrl_1 */
+/* Adjust WiFi drive strengths lower for EMI */
+&sd1_bus1 {
+	samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
+};
 
-	sd1_cmd: sd1-cmd {
-		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
-	};
+&sd1_bus4 {
+	samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
+};
 
-	sd1_bus1: sd1-bus-width1 {
-		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
-	};
+&sd1_bus8 {
+	samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
+};
 
-	sd1_bus4: sd1-bus-width4 {
-		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
-	};
+&sd1_clk {
+	samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
+};
 
-	sd1_bus8: sd1-bus-width8 {
-		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
-	};
+&sd1_cmd {
+	samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
 };
 
 &pinctrl_2 {
@@ -889,12 +888,13 @@
 	};
 };
 
-&pinctrl_3 {
-	/* Drive SPI lines at x2 for better integrity */
-	spi2-bus {
-		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
-	};
+/* pinctrl_3*/
+/* Drive SPI lines at x2 for better integrity */
+&spi2_bus {
+	samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>;
+};
 
+&pinctrl_3 {
 	/* Drive SPI chip select at x2 for better integrity */
 	ec_spi_cs: ec-spi-cs {
 		samsung,pins = "gpb1-2";