board: samsung: goni: fix the pmic's name for getting

For Getting from uclass, use the "max8998-pmic" as name.
It also needs to change the dt-node's name as "max8998-pmic".
Otherwise, it doesn't find the pmic device.
Because it's only searching for 'max8998_pmic'.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/dts/s5pc1xx-goni.dts b/arch/arm/dts/s5pc1xx-goni.dts
index e80132d..182325a 100644
--- a/arch/arm/dts/s5pc1xx-goni.dts
+++ b/arch/arm/dts/s5pc1xx-goni.dts
@@ -42,7 +42,7 @@
 		#size-cells = <0>;
 		status = "okay";
 
-		pmic@66 {
+		max8998-pmic@66 {
 			compatible = "maxim,max8998";
 			reg = <0x66 0 0>;