ppc4xx: Convert PPC4xx UIC defines from lower case to upper case

The latest PPC4xx register cleanup patch missed the UIC defines.
This patch now changes lower case UIC defines to upper case.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/mpl/pip405/pip405.c b/board/mpl/pip405/pip405.c
index e00d1d0..c2d6c6f 100644
--- a/board/mpl/pip405/pip405.c
+++ b/board/mpl/pip405/pip405.c
@@ -552,13 +552,13 @@
    |       caused the interrupt.
    |
    +-------------------------------------------------------------------------*/
-	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
-	mtdcr (uicer, 0x00000000);	/* disable all ints */
-	mtdcr (uiccr, 0x00000000);	/* set all to be non-critical (for now) */
-	mtdcr (uicpr, 0xFFFFFF80);	/* set int polarities */
-	mtdcr (uictr, 0x10000000);	/* set int trigger levels */
-	mtdcr (uicvcr, 0x00000001);	/* set vect base=0,INT0 highest priority */
-	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr (UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr (UIC0ER, 0x00000000);	/* disable all ints */
+	mtdcr (UIC0CR, 0x00000000);	/* set all to be non-critical (for now) */
+	mtdcr (UIC0PR, 0xFFFFFF80);	/* set int polarities */
+	mtdcr (UIC0TR, 0x10000000);	/* set int trigger levels */
+	mtdcr (UIC0VCR, 0x00000001);	/* set vect base=0,INT0 highest priority */
+	mtdcr (UIC0SR, 0xFFFFFFFF);	/* clear all ints */
 
 	return 0;
 }