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/netstal/hcu4/hcu4.c b/board/netstal/hcu4/hcu4.c
index 40bec8e..ba3e9c3 100644
--- a/board/netstal/hcu4/hcu4.c
+++ b/board/netstal/hcu4/hcu4.c
@@ -58,12 +58,12 @@
 	 *      IRQ 17-24 RESERVED/UNUSED
 	 *      IRQ 31 (EXT IRQ 6) (unused)
 	 */
-	mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
-	mtdcr(uicer, 0x00000000); /* disable all ints */
-	mtdcr(uiccr, 0x00000000); /* set all to be non-critical */
-	mtdcr(uicpr, 0xFFFFE000); /* set int polarities */
-	mtdcr(uictr, 0x00000000); /* set int trigger levels */
-	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 */
+	mtdcr(UIC0PR, 0xFFFFE000); /* set int polarities */
+	mtdcr(UIC0TR, 0x00000000); /* set int trigger levels */
+	mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
 
 	mtdcr(CPC0_CR1, CPC0_CR1_VALUE);
 	mtdcr(CPC0_ECR, 0x60606000);