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/amcc/acadia/memory.c b/board/amcc/acadia/memory.c
index 3e5c80e..8c2addc 100644
--- a/board/amcc/acadia/memory.c
+++ b/board/amcc/acadia/memory.c
@@ -65,7 +65,7 @@
 	u32 reg;
 
 	/* don't reinit PLL when booting via I2C bootstrap option */
-	mfsdr(SDR_PINSTP, reg);
+	mfsdr(SDR0_PINSTP, reg);
 	if (reg != 0xf0000000)
 		board_pll_init_f();
 #endif
@@ -81,25 +81,25 @@
 	gpio_config(CONFIG_SYS_GPIO_CRAM_WAIT, GPIO_IN, GPIO_SEL, GPIO_OUT_NO_CHG);
 
 	/* 2. EBC in Async mode */
-	mtebc(pb1ap, 0x078F1EC0);
-	mtebc(pb2ap, 0x078F1EC0);
-	mtebc(pb1cr, 0x000BC000);
-	mtebc(pb2cr, 0x020BC000);
+	mtebc(PB1AP, 0x078F1EC0);
+	mtebc(PB2AP, 0x078F1EC0);
+	mtebc(PB1CR, 0x000BC000);
+	mtebc(PB2CR, 0x020BC000);
 
 	/* 3. Set CRAM in Sync mode */
 	cram_bcr_write(0x7012);		/* CRAM burst setting */
 
 	/* 4. EBC in Sync mode */
-	mtebc(pb1ap, 0x9C0201C0);
-	mtebc(pb2ap, 0x9C0201C0);
+	mtebc(PB1AP, 0x9C0201C0);
+	mtebc(PB2AP, 0x9C0201C0);
 
 	/* Set GPIO pins back to alternate function */
 	gpio_config(CONFIG_SYS_GPIO_CRAM_CLK, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG);
 	gpio_config(CONFIG_SYS_GPIO_CRAM_ADV, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG);
 
 	/* Config EBC to use RDY */
-	mfsdr(sdrultra0, val);
-	mtsdr(sdrultra0, val | SDR_ULTRA0_EBCRDYEN);
+	mfsdr(SDR0_ULTRA0, val);
+	mtsdr(SDR0_ULTRA0, val | SDR_ULTRA0_EBCRDYEN);
 
 	/* Wait a short while, since for NAND booting this is too fast */
 	for (i=0; i<200000; i++)