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/A20-OLinuXino-Lime2_defconfig b/configs/A20-OLinuXino-Lime2_defconfig
index 187d8a5..a78cbfb 100644
--- a/configs/A20-OLinuXino-Lime2_defconfig
+++ b/configs/A20-OLinuXino-Lime2_defconfig
@@ -11,6 +11,7 @@
CONFIG_SATAPWR="PC3"
CONFIG_AHCI=y
# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_STACK=0x8000
CONFIG_SPL_I2C=y
CONFIG_SYS_PBSIZE=1024
CONFIG_CMD_DFU=y