ppc4xx: Big header cleanup, mostly PPC440 related

This patch starts a bit PPC4xx header cleanup. First patch mostly
touches PPC440 files. A later patch will touch the PPC405 files as well.

This cleanup is done by creating header files for all SoC versions and
moving the SoC specific defines into these special headers. This way the
common header ppc405.h and ppc440.h can be cleaned up finally.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/amcc/bamboo/bamboo.c b/board/amcc/bamboo/bamboo.c
index 41957c9..d4205e0 100644
--- a/board/amcc/bamboo/bamboo.c
+++ b/board/amcc/bamboo/bamboo.c
@@ -554,7 +554,7 @@
 	  |
 	  +-------------------------------------------------------------------------*/
 	/* Read Pin Strap Register in PPC440EP */
-	mfsdr(sdr_pstrp0, sdr0_pstrp0);
+	mfsdr(SDR0_PINSTP, sdr0_pstrp0);
 	bootstrap_settings = sdr0_pstrp0 & SDR0_PSTRP0_BOOTSTRAP_MASK;
 
 	/*-------------------------------------------------------------------------+
diff --git a/board/amcc/bamboo/bamboo.h b/board/amcc/bamboo/bamboo.h
index 4474862..f2b78a9 100644
--- a/board/amcc/bamboo/bamboo.h
+++ b/board/amcc/bamboo/bamboo.h
@@ -110,17 +110,6 @@
 /*----------------------------------------------------------------------------+
 | SDR Configuration registers
 +----------------------------------------------------------------------------*/
-/* Serial Device Strap Reg 0 */
-#define SDR0_SDSTP0		     0x0020
-/* Serial Device Strap Reg 1 */
-#define SDR0_SDSTP1		     0x0021
-/* Serial Device Strap Reg 2 */
-#define SDR0_SDSTP2		     SDR0_STRP2
-/* Serial Device Strap Reg 3 */
-#define SDR0_SDSTP3		     SDR0_STRP3
-
-#define sdr_pstrp0		     0x0040
-
 #define	  SDR0_SDSTP1_EBC_ROM_BS_MASK  0x00006000  /* EBC Boot Size Mask */
 #define	  SDR0_SDSTP1_EBC_ROM_BS_32BIT 0x00004000    /* EBC 32 bits */
 #define	  SDR0_SDSTP1_EBC_ROM_BS_16BIT 0x00002000    /* EBC 16 Bits */
diff --git a/board/amcc/bamboo/flash.c b/board/amcc/bamboo/flash.c
index 406342f..07d185f 100644
--- a/board/amcc/bamboo/flash.c
+++ b/board/amcc/bamboo/flash.c
@@ -86,7 +86,7 @@
 	unsigned long ebc_boot_size;
 	unsigned long boot_selection;
 
-	mfsdr(sdr_pstrp0, val);
+	mfsdr(SDR0_PINSTP, val);
 	index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;
 
 	if ((index == 5) || (index == 7)) {