block: Migrate SystemACE chip to Kconfig

Migrate the base and sub-options to Kconfig.  Note that we only enable
this in the base sandbox config now.

Cc: Alexey Brodkin <alexey.brodkin@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
---
Is this driver still used anywhere?  It's fishy that it's only enabled
in sandbox anymore.

drivers/block/Kconfig

@@ -38,3 +38,21 @@ config IDE
 	  This allows access to raw blocks and filesystems on an IDE drive
 	  from U-Boot. See also CMD_IDE which provides an 'ide' command for
 	  performing various IDE operations.
+
+config SYSTEMACE
+	bool "Xilinx SystemACE support"
+	help
+	  Adding this option adds support for Xilinx SystemACE chips attached
+	  via some sort of local bus. The address of the chip must also be
+	  defined in the CONFIG_SYS_SYSTEMACE_BASE macro.
+
+	  When SystemACE support is added, the "ace" device type becomes
+	  available to the fat commands, i.e. fatls.
+
+config SYS_SYSTEMACE_BASE
+	hex "Base address of SystemACE chip"
+	depends on SYSTEMACE
+
+config SYS_SYSTEMACE_WIDTH
+	int "Word size of access to the of SystemACE chip"
+	depends on SYSTEMACE