Convert CONFIG_SYS_IDE_MAXBUS et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_IDE_MAXBUS
   CONFIG_SYS_IDE_MAXDEVICE
   CONFIG_SYS_ATA_BASE_ADDR
   CONFIG_SYS_ATA_STRIDE
   CONFIG_SYS_ATA_DATA_OFFSET
   CONFIG_SYS_ATA_REG_OFFSET
   CONFIG_SYS_ATA_ALT_OFFSET
   CONFIG_SYS_ATA_IDE0_OFFSET
   CONFIG_SYS_ATA_IDE1_OFFSET
   CONFIG_ATAPI
   CONFIG_IDE_RESET

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/configs/nas220_defconfig b/configs/nas220_defconfig
index 7e4e19a..f6a1dcb 100644
--- a/configs/nas220_defconfig
+++ b/configs/nas220_defconfig
@@ -42,6 +42,10 @@
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_NETCONSOLE=y
 CONFIG_DM=y
+CONFIG_SYS_ATA_STRIDE=4
+CONFIG_SYS_ATA_DATA_OFFSET=0x100
+CONFIG_SYS_ATA_REG_OFFSET=0x100
+CONFIG_SYS_ATA_ALT_OFFSET=0x100
 CONFIG_KIRKWOOD_GPIO=y
 # CONFIG_MMC is not set
 CONFIG_MTD=y