ppc4xx: Big cleanup of PPC4xx defines

This patch cleans up multiple issues of the 4xx register (mostly
DCR, SDR, CPR, etc) definitions:

- Change lower case defines to upper case (plb4_acr -> PLB4_ACR)
- Change the defines to better match the names from the
  user's manuals (e.g. cprpllc -> CPR0_PLLC)
- Removal of some unused defines

Please test this patch intensive on your PPC4xx platform. Even though
I tried not to break anything and tested successfully on multiple
4xx AMCC platforms, testing on custom platforms is recommended.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/snmc/qs860t/flash.c b/board/snmc/qs860t/flash.c
index 2cb8dcb..48c2258 100644
--- a/board/snmc/qs860t/flash.c
+++ b/board/snmc/qs860t/flash.c
@@ -102,21 +102,21 @@
 
 		/* Re-do sizing to get full correct info */
 		if (size_b1) {
-			mtdcr(ebccfga, pb0cr);
-			pbcr = mfdcr(ebccfgd);
-			mtdcr(ebccfga, pb0cr);
+			mtdcr(EBC0_CFGADDR, PB0CR);
+			pbcr = mfdcr(EBC0_CFGDATA);
+			mtdcr(EBC0_CFGADDR, PB0CR);
 			base_b1 = -size_b1;
 			pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
-			mtdcr(ebccfgd, pbcr);
+			mtdcr(EBC0_CFGDATA, pbcr);
 		}
 
 		if (size_b0) {
-			mtdcr(ebccfga, pb1cr);
-			pbcr = mfdcr(ebccfgd);
-			mtdcr(ebccfga, pb1cr);
+			mtdcr(EBC0_CFGADDR, PB1CR);
+			pbcr = mfdcr(EBC0_CFGDATA);
+			mtdcr(EBC0_CFGADDR, PB1CR);
 			base_b0 = base_b1 - size_b0;
 			pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
-			mtdcr(ebccfgd, pbcr);
+			mtdcr(EBC0_CFGDATA, pbcr);
 		}
 
 		size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b0, &flash_info[0]);