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/imx8mn_bsh_smm_s2_defconfig b/configs/imx8mn_bsh_smm_s2_defconfig
index 2e27dd9..9a4609d 100644
--- a/configs/imx8mn_bsh_smm_s2_defconfig
+++ b/configs/imx8mn_bsh_smm_s2_defconfig
@@ -30,6 +30,8 @@
CONFIG_SPL_BSS_MAX_SIZE=0x2000
CONFIG_SPL_BOARD_INIT=y
CONFIG_SPL_BOOTROM_SUPPORT=y
+# CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
+CONFIG_SPL_STACK=0x980000
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x300
CONFIG_SPL_I2C=y