ppc4xx: Cleanup for partial linking and --gc-sections

This commit adapts 4xx boards for partial linking with --gc-sections.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Tirumala Marri <tmarri@apm.com>
Cc: David Updegraff <dave@cray.com>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: Larry Johnson <lrj@acm.org>
Cc: Peter De Schrijver <p2@mind.be>
Cc: Niklaus Giger <niklaus.giger@netstal.com>
Cc: Daniel Poirot <dan.poirot@windriver.com>
Acked-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/AP1000.h b/include/configs/AP1000.h
index 9e5490d..ffaab79 100644
--- a/include/configs/AP1000.h
+++ b/include/configs/AP1000.h
@@ -94,6 +94,14 @@
 #define CONFIG_SPD_EEPROM	1	/* use SPD EEPROM for setup    */
 
 /*
+ * I2C
+ */
+#define CONFIG_HARD_I2C			/* I2C with hardware support	*/
+#define CONFIG_PPC4XX_I2C		/* use PPC4xx driver		*/
+#define CONFIG_SYS_I2C_SLAVE	0x7F
+#define CONFIG_SYS_I2C_SPEED	400000
+
+/*
  * Miscellaneous configurable options
  */
 #define CONFIG_SYS_LONGHELP			/* undef to save memory	    */
diff --git a/include/configs/CANBT.h b/include/configs/CANBT.h
index b27ef64..be9238e 100644
--- a/include/configs/CANBT.h
+++ b/include/configs/CANBT.h
@@ -77,7 +77,7 @@
 #define CONFIG_CMD_EEPROM
 
 #undef CONFIG_CMD_NET
-
+#undef CONFIG_CMD_NFS
 
 #undef CONFIG_WATCHDOG			/* watchdog disabled		*/
 
diff --git a/include/configs/CPCI2DP.h b/include/configs/CPCI2DP.h
index 99ace67..afe8d6e 100644
--- a/include/configs/CPCI2DP.h
+++ b/include/configs/CPCI2DP.h
@@ -78,7 +78,7 @@
 #define CONFIG_CMD_EEPROM
 
 #undef CONFIG_CMD_NET
-
+#undef CONFIG_CMD_NFS
 
 #undef	CONFIG_WATCHDOG			/* watchdog disabled		*/
 
diff --git a/include/configs/DP405.h b/include/configs/DP405.h
index ecdf93f..f6e2652 100644
--- a/include/configs/DP405.h
+++ b/include/configs/DP405.h
@@ -65,6 +65,7 @@
 #define CONFIG_CMD_EEPROM
 
 #undef CONFIG_CMD_NET
+#undef CONFIG_CMD_NFS
 
 #undef	CONFIG_WATCHDOG			/* watchdog disabled		*/
 
diff --git a/include/configs/ML2.h b/include/configs/ML2.h
index ed78387..1e96b9e 100644
--- a/include/configs/ML2.h
+++ b/include/configs/ML2.h
@@ -88,6 +88,7 @@
 #define CONFIG_CMD_JFFS2
 
 #undef CONFIG_CMD_NET
+#undef CONFIG_CMD_NFS
 #undef CONFIG_CMD_RTC
 #undef CONFIG_CMD_PCI
 #undef CONFIG_CMD_I2C
@@ -100,6 +101,14 @@
 #define CONFIG_SPD_EEPROM      1       /* use SPD EEPROM for setup    */
 
 /*
+ * I2C
+ */
+#define CONFIG_HARD_I2C			/* I2C with hardware support	*/
+#define CONFIG_PPC4XX_I2C		/* use PPC4xx driver		*/
+#define CONFIG_SYS_I2C_SLAVE	0x7F
+#define CONFIG_SYS_I2C_SPEED	400000
+
+/*
  * Miscellaneous configurable options
  */
 #define CONFIG_SYS_LONGHELP			/* undef to save memory		*/
diff --git a/include/configs/sc3.h b/include/configs/sc3.h
index 0451105..873d3b4 100644
--- a/include/configs/sc3.h
+++ b/include/configs/sc3.h
@@ -518,7 +518,7 @@
 
 #define CONFIG_SYS_EBC_CFG    0xb84ef000
 
-#define CONFIG_SDRAM_BANK0	/* use the standard SDRAM initialization */
+#undef CONFIG_SDRAM_BANK0	/* use private SDRAM initialization */
 #undef CONFIG_SPD_EEPROM
 
 /*