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/zeus/zeus.c b/board/zeus/zeus.c
index fc9dfa0..01273a1 100644
--- a/board/zeus/zeus.c
+++ b/board/zeus/zeus.c
@@ -50,13 +50,13 @@
 
 int board_early_init_f(void)
 {
-	mtdcr(uicsr, 0xFFFFFFFF);	/* clear all ints */
-	mtdcr(uicer, 0x00000000);	/* disable all ints */
-	mtdcr(uiccr, 0x00000000);
-	mtdcr(uicpr, 0xFFFF7F00);	/* set int polarities */
-	mtdcr(uictr, 0x00000000);	/* set int trigger levels */
-	mtdcr(uicsr, 0xFFFFFFFF);	/* clear all ints */
-	mtdcr(uicvcr, 0x00000001);	/* set vect base=0,INT0 highest priority */
+	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr(UIC0ER, 0x00000000);	/* disable all ints */
+	mtdcr(UIC0CR, 0x00000000);
+	mtdcr(UIC0PR, 0xFFFF7F00);	/* set int polarities */
+	mtdcr(UIC0TR, 0x00000000);	/* set int trigger levels */
+	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr(UIC0VCR, 0x00000001);	/* set vect base=0,INT0 highest priority */
 
 	/*
 	 * Configure CPC0_PCI to enable PerWE as output