exynos: dts: Sync up I2C ports with the kernel

The kernel uses upper case for I2C unit addresses. Follow the same
convention to reduce differences.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
diff --git a/arch/arm/dts/exynos5420-peach-pit.dts b/arch/arm/dts/exynos5420-peach-pit.dts
index 6fe762d..0f1002e 100644
--- a/arch/arm/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/dts/exynos5420-peach-pit.dts
@@ -25,7 +25,7 @@
 	aliases {
 		serial0 = "/serial@12C30000";
 		console = "/serial@12C30000";
-		pmic = "/i2c@12ca0000";
+		pmic = "/i2c@12CA0000";
 	};
 
 	dmc {
@@ -49,7 +49,7 @@
 	};
 
 	/* MAX77802 is on i2c bus 4 */
-	i2c@12ca0000 {
+	i2c@12CA0000 {
 		clock-frequency = <400000>;
 		power-regulator@9 {
 			compatible = "maxim,max77802-pmic";
@@ -57,7 +57,7 @@
 		};
 	};
 
-	i2c@12cd0000 { /* i2c7 */
+	i2c@12CD0000 { /* i2c7 */
 		clock-frequency = <100000>;
 	       soundcodec@20 {
 	              reg = <0x20>;
@@ -76,7 +76,7 @@
                 samsung,codec-type = "max98090";
         };
 
-	i2c@12e10000 { /* i2c9 */
+	i2c@12E10000 { /* i2c9 */
 		clock-frequency = <400000>;
                 tpm@20 {
                         compatible = "infineon,slb9645tt";