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/esd/canbt/canbt.c b/board/esd/canbt/canbt.c
index 2fe6b7b..418d3e2 100644
--- a/board/esd/canbt/canbt.c
+++ b/board/esd/canbt/canbt.c
@@ -52,16 +52,16 @@
 
 int board_early_init_f (void)
 {
-	unsigned long cntrl0Reg;
+	unsigned long CPC0_CR0Reg;
 	int index, len, i;
 	int status;
 
 	/*
 	 * Setup GPIO pins
 	 */
-	cntrl0Reg = mfdcr (cntrl0) & 0xf0001fff;
-	cntrl0Reg |= 0x0070f000;
-	mtdcr (cntrl0, cntrl0Reg);
+	CPC0_CR0Reg = mfdcr (CPC0_CR0) & 0xf0001fff;
+	CPC0_CR0Reg |= 0x0070f000;
+	mtdcr (CPC0_CR0, CPC0_CR0Reg);
 
 #ifdef FPGA_DEBUG
 	/* set up serial port with default baudrate */
diff --git a/board/esd/canbt/flash.c b/board/esd/canbt/flash.c
index 56c822e..224dde4 100644
--- a/board/esd/canbt/flash.c
+++ b/board/esd/canbt/flash.c
@@ -64,13 +64,13 @@
 	flash_get_offsets (-size_b0, &flash_info[0]);
 
 	/* Re-do sizing to get full correct info */
-	mtdcr(ebccfga, pb0cr);
-	pbcr = mfdcr(ebccfgd);
-	mtdcr(ebccfga, pb0cr);
+	mtdcr(EBC0_CFGADDR, PB0CR);
+	pbcr = mfdcr(EBC0_CFGDATA);
+	mtdcr(EBC0_CFGADDR, PB0CR);
 	base_b0 = -size_b0;
 	pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
-	mtdcr(ebccfgd, pbcr);
-	/*          printf("pb1cr = %x\n", pbcr); */
+	mtdcr(EBC0_CFGDATA, pbcr);
+	/*          printf("PB1CR = %x\n", pbcr); */
 
 	/* Monitor protection ON by default */
 	(void)flash_protect(FLAG_PROTECT_SET,