ppc4xx: Cleanup some HW register names

Here you find all the changes in the include directory for new register names
and adapting other ones to the names used by AMCC in their manuals, e.g.
For 440EPx/GRPPC440EPx/GRX, Revision 1.15 – September 22, 2008
For PPC405GP Embedded Processor, Revision 1.02 – March 22, 2006

Signed-off-by: Niklaus Giger <niklaus.giger@member.fsf.org>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/ppc405.h b/include/ppc405.h
index 5e56897..4c62249 100644
--- a/include/ppc405.h
+++ b/include/ppc405.h
@@ -578,7 +578,7 @@
 #define    IICEXTSTS	    0x09
 #define    IICLSADR	    0x0A
 #define    IICHSADR	    0x0B
-#define    IICCLKDIV	    0x0C
+#define    IIC0_CLKDIV	    0x0C
 #define    IICINTRMSK	    0x0D
 #define    IICXFRCNT	    0x0E
 #define    IICXTCNTLSS	    0x0F
@@ -760,7 +760,7 @@
 #define CPR0_PLLD	0x060
 #define CPR0_CPUD	0x080
 #define CPR0_PLBD	0x0a0
-#define CPR0_OPBD	0x0c0
+#define CPR0_OPBD0	0x0c0
 #define CPR0_PERD	0x0e0
 
 #define SDR0_PINSTP	0x0040