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/apc405/apc405.c b/board/esd/apc405/apc405.c
index 5a02155..46622a2 100644
--- a/board/esd/apc405/apc405.c
+++ b/board/esd/apc405/apc405.c
@@ -92,7 +92,7 @@
 
 int board_revision(void)
 {
-	unsigned long cntrl0Reg;
+	unsigned long CPC0_CR0Reg;
 	unsigned long value;
 
 	/*
@@ -100,8 +100,8 @@
 	 */
 
 	/* Setup GPIO pins (CS2/GPIO11, CS3/GPIO12 and CS4/GPIO13 as GPIO) */
-	cntrl0Reg = mfdcr(cntrl0);
-	mtdcr(cntrl0, cntrl0Reg | 0x03800000);
+	CPC0_CR0Reg = mfdcr(CPC0_CR0);
+	mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x03800000);
 	out_be32((void*)GPIO0_ODR, in_be32((void*)GPIO0_ODR) & ~0x001c0000);
 	out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) & ~0x001c0000);
 
@@ -113,7 +113,7 @@
 	/*
 	 * Restore GPIO settings
 	 */
-	mtdcr(cntrl0, cntrl0Reg);
+	mtdcr(CPC0_CR0, CPC0_CR0Reg);
 
 	switch (value) {
 	case 0x001c0000:
@@ -166,7 +166,7 @@
 	/*
 	 * EBC Configuration Register: set ready timeout to 512 ebc-clks
 	 */
-	mtebc(epcr, 0xa8400000); /* ebc always driven */
+	mtebc(EBC0_CFG, 0xa8400000); /* ebc always driven */
 
 	/*
 	 * New boards have a single 32MB flash connected to CS0
@@ -174,12 +174,12 @@
 	 */
 	if (board_revision() >= 8) {
 		/* disable CS1 */
-		mtebc(pb1ap, 0);
-		mtebc(pb1cr, 0);
+		mtebc(PB1AP, 0);
+		mtebc(PB1CR, 0);
 
 		/* resize CS0 to 32MB */
-		mtebc(pb0ap, CONFIG_SYS_EBC_PB0AP_HWREV8);
-		mtebc(pb0cr, CONFIG_SYS_EBC_PB0CR_HWREV8);
+		mtebc(PB0AP, CONFIG_SYS_EBC_PB0AP_HWREV8);
+		mtebc(PB0CR, CONFIG_SYS_EBC_PB0CR_HWREV8);
 	}
 
 	return 0;
@@ -209,7 +209,7 @@
 	int status;
 	int index;
 	int i;
-	unsigned long cntrl0Reg;
+	unsigned long CPC0_CR0Reg;
 	char *str;
 	uchar *logo_addr;
 	ulong logo_size;
@@ -219,8 +219,8 @@
 	/*
 	 * Setup GPIO pins (CS6+CS7 as GPIO)
 	 */
-	cntrl0Reg = mfdcr(cntrl0);
-	mtdcr(cntrl0, cntrl0Reg | 0x00300000);
+	CPC0_CR0Reg = mfdcr(CPC0_CR0);
+	mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x00300000);
 
 	dst = malloc(CONFIG_SYS_FPGA_MAX_SIZE);
 	if (gunzip(dst, CONFIG_SYS_FPGA_MAX_SIZE, (uchar *)fpgadata, &len) != 0) {
@@ -265,7 +265,7 @@
 	}
 
 	/* restore gpio/cs settings */
-	mtdcr(cntrl0, cntrl0Reg);
+	mtdcr(CPC0_CR0, CPC0_CR0Reg);
 
 	puts("FPGA:  ");