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/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 29a8917..926c34c 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -112,6 +112,13 @@
 CONFIG_ADC_SANDBOX=y
 CONFIG_AXI=y
 CONFIG_AXI_SANDBOX=y
+CONFIG_SYS_IDE_MAXBUS=1
+CONFIG_SYS_ATA_BASE_ADDR=0x100
+CONFIG_SYS_ATA_STRIDE=4
+CONFIG_SYS_ATA_DATA_OFFSET=0
+CONFIG_SYS_ATA_REG_OFFSET=1
+CONFIG_SYS_ATA_ALT_OFFSET=2
+CONFIG_SYS_ATA_IDE0_OFFSET=0
 CONFIG_CLK=y
 CONFIG_SPL_CLK=y
 CONFIG_CPU=y