ARM: tegra: colibri_t20: rename tps6586x@34 and drop unused pmic label

Rename tps6586x@34 to pmic@34 and drop the unused pmic label.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra20-colibri-iris.dts

@@ -11,7 +11,7 @@ / {
 
 	aliases {
 		rtc0 = "/i2c@7000c000/rtc@68";
-		rtc1 = "/i2c@7000d000/tps6586x@34";
+		rtc1 = "/i2c@7000d000/pmic@34";
 		rtc2 = "/rtc@7000e000";
 		serial0 = &uarta;
 		serial1 = &uartd;

arch/arm/boot/dts/tegra20-colibri.dtsi

@@ -472,7 +472,7 @@ i2c@7000d000 {
 		status = "okay";
 		clock-frequency = <100000>;
 
-		pmic: tps6586x@34 {
+		pmic@34 {
 			compatible = "ti,tps6586x";
 			reg = <0x34>;
 			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;