Convert CONFIG_CMD_IO to Kconfig

This converts the following to Kconfig:
   CONFIG_CMD_IO

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

README

@@ -850,7 +850,6 @@ The following options need to be configured:
 		CONFIG_CMD_IMI		  iminfo
 		CONFIG_CMD_IMLS		  List all images found in NOR flash
 		CONFIG_CMD_IMLS_NAND	* List all images found in NAND flash
-		CONFIG_CMD_IOTRACE	* I/O tracing for debugging
 		CONFIG_CMD_IMPORTENV	* import an environment
 		CONFIG_CMD_INI		* import data from an ini file into the env
 		CONFIG_CMD_IRQ		* irqinfo

arch/Kconfig

@@ -69,6 +69,7 @@ config SANDBOX
 	select DM_GPIO
 	select DM_MMC
 	imply CMD_HASH
+	imply CMD_IO
 
 config SH
 	bool "SuperH architecture"
@@ -89,6 +90,7 @@ config X86
 	select DM_MMC if MMC
 	imply CMD_FPGA_LOADMK
 	imply CMD_GETTIME
+	imply CMD_IO
 
 config XTENSA
 	bool "Xtensa architecture"

cmd/Kconfig

@@ -493,6 +493,14 @@ config CMD_IDE
 	  geting device info. It also enables the 'diskboot' command which
 	  permits booting from an IDE drive.
 
+config CMD_IO
+	bool "io - Support for performing I/O accesses"
+	help
+	  Provides an 'iod' command to display I/O space and an 'iow' command
+	  to write values to the I/O space. This can be useful for manually
+	  checking the state of devices during boot when debugging device
+	  drivers, etc.
+
 config CMD_LOADB
 	bool "loadb"
 	default y

include/config_cmd_all.h

@@ -13,7 +13,6 @@
  * Alphabetical list of all possible commands.
  */
 
-#define CONFIG_CMD_IO		/* Access to X86 IO space	*/
 #define CONFIG_CMD_IRQ		/* irqinfo			*/
 #define CONFIG_CMD_JFFS2	/* JFFS2 Support		*/
 #define CONFIG_CMD_KGDB		/* kgdb				*/

include/configs/sandbox.h

@@ -29,7 +29,6 @@
 #define CONFIG_ANDROID_BOOT_IMAGE
 
 #define CONFIG_CMD_PCI
-#define CONFIG_CMD_IO
 
 #define CONFIG_FS_FAT
 #define CONFIG_FAT_WRITE

include/configs/x86-common.h

@@ -70,7 +70,6 @@
 /*-----------------------------------------------------------------------
  * Command line configuration.
  */
-#define CONFIG_CMD_IO
 #define CONFIG_CMD_IRQ
 #define CONFIG_CMD_PCI
 #define CONFIG_SCSI

scripts/config_whitelist.txt

@@ -383,7 +383,6 @@ CONFIG_CM922T_XA10
 CONFIG_CMDLINE_EDITING
 CONFIG_CMDLINE_PS_SUPPORT
 CONFIG_CMDLINE_TAG
-CONFIG_CMD_IO
 CONFIG_CMD_IOLOOP
 CONFIG_CMD_IOTRACE
 CONFIG_CMD_IRQ