Convert CONFIG_CMD_CHIP_CONFIG to Kconfig

This converts the following to Kconfig:
   CONFIG_CMD_CHIP_CONFIG

Signed-off-by: Simon Glass <sjg@chromium.org>

include/configs/icon.h

@@ -159,7 +159,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DATE
 #define CONFIG_CMD_PCI
 #define CONFIG_CMD_SDRAM

include/configs/intip.h

@@ -272,7 +272,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DATE
 #define CONFIG_CMD_DTT
 #define CONFIG_CMD_PCI

include/configs/io64.h

@@ -373,7 +373,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DTT
 
 #define CONFIG_SYS_POST_MEMORY_ON	CONFIG_SYS_POST_MEMORY

include/configs/katmai.h

@@ -170,7 +170,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DATE
 #define CONFIG_CMD_ECCTEST
 #define CONFIG_CMD_PCI

include/configs/kilauea.h

@@ -364,7 +364,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DATE
 #define CONFIG_CMD_NAND
 #define CONFIG_CMD_PCI

include/configs/sequoia.h

@@ -222,7 +222,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_DTT
 #define CONFIG_CMD_NAND
 #define CONFIG_CMD_PCI

include/configs/t3corp.h

@@ -349,7 +349,6 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
-#define CONFIG_CMD_CHIP_CONFIG
 #define CONFIG_CMD_ECCTEST
 #define CONFIG_CMD_PCI
 #define CONFIG_CMD_SDRAM

scripts/config_whitelist.txt

@@ -393,7 +393,6 @@ CONFIG_CM922T_XA10
 CONFIG_CMDLINE_EDITING
 CONFIG_CMDLINE_PS_SUPPORT
 CONFIG_CMDLINE_TAG
-CONFIG_CMD_CHIP_CONFIG
 CONFIG_CMD_CLEAR
 CONFIG_CMD_CLK
 CONFIG_CMD_CRAMFS