Convert CONFIG_SPL_STACK to Kconfig
This converts the following to Kconfig:
CONFIG_SPL_STACK
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/Marsboard_A10_defconfig b/configs/Marsboard_A10_defconfig
index 8ba587d..c88cfd6 100644
--- a/configs/Marsboard_A10_defconfig
+++ b/configs/Marsboard_A10_defconfig
@@ -5,6 +5,7 @@
CONFIG_MACH_SUN4I=y
CONFIG_AHCI=y
# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_STACK=0x8000
CONFIG_SYS_PBSIZE=1024
CONFIG_SCSI_AHCI=y
CONFIG_SYS_I2C_MVTWSI=y