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/csb472/csb472.c b/board/csb472/csb472.c
index fa0fa19..0c7760a 100644
--- a/board/csb472/csb472.c
+++ b/board/csb472/csb472.c
@@ -55,13 +55,13 @@
    |
    +-------------------------------------------------------------------------*/
 
-	mtdcr (uicsr, 0xFFFFFFFF);   /* clear all ints */
-	mtdcr (uicer, 0x00000000);   /* disable all ints */
-	mtdcr (uiccr, 0x00000000);   /* set all to be non-critical */
-	mtdcr (uicpr, 0xFFFFFF83);   /* 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 */
+	mtdcr (UIC0PR, 0xFFFFFF83);   /* 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 */
 
 	mtebc (EBC0_CFG, 0xa8400000);   /* EBC always driven */