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/luan/luan.c b/board/amcc/luan/luan.c
index 7d02d90..71ad89f 100644
--- a/board/amcc/luan/luan.c
+++ b/board/amcc/luan/luan.c
@@ -42,12 +42,12 @@
 {
 	u32 mfr;
 
-	mtebc( pb0ap,  0x03800000 );	/* set chip selects */
-	mtebc( pb0cr,  0xffc58000 );	/* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
-	mtebc( pb1ap,  0x03800000 );
-	mtebc( pb1cr,  0xff018000 );	/* ebc0_b1cr, 1MB at 0xff000000 CS1 */
-	mtebc( pb2ap,  0x03800000 );
-	mtebc( pb2cr,  0xff838000 );	/* ebc0_b2cr, 2MB at 0xff800000 CS2 */
+	mtebc( PB0AP,  0x03800000 );	/* set chip selects */
+	mtebc( PB0CR,  0xffc58000 );	/* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
+	mtebc( PB1AP,  0x03800000 );
+	mtebc( PB1CR,  0xff018000 );	/* ebc0_b1cr, 1MB at 0xff000000 CS1 */
+	mtebc( PB2AP,  0x03800000 );
+	mtebc( PB2CR,  0xff838000 );	/* ebc0_b2cr, 2MB at 0xff800000 CS2 */
 
 	mtdcr( uic1sr, 0xffffffff );	/* Clear all interrupts */
 	mtdcr( uic1er, 0x00000000 );	/* disable all interrupts */
@@ -67,9 +67,9 @@
 	mtdcr( uic0sr, 0x00000000 );	/* clear all interrupts */
 	mtdcr( uic0sr, 0xffffffff );
 
-	mfsdr(sdr_mfr, mfr);
+	mfsdr(SDR0_MFR, mfr);
 	mfr |= SDR0_MFR_FIXD;		/* Workaround for PCI/DMA */
-	mtsdr(sdr_mfr, mfr);
+	mtsdr(SDR0_MFR, mfr);
 
 	return  0;
 }
@@ -147,7 +147,7 @@
 	 *	The luan board is always configured as the host & requires the
 	 *	PCI arbiter to be enabled.
 	 *--------------------------------------------------------------------------*/
-	mfsdr(sdr_sdstp1, strap);
+	mfsdr(SDR0_SDSTP1, strap);
 	if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
 		printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);