imx: Convert SERIAL_TAG support to ENV_VARS_UBOOT_RUNTIME_CONFIG
No iMX platforms have supported ATAG-based booting. They have however
re-used the CONFIG_SERIAL_TAG option as a way to enable support of
reading the OTP fuses and setting the serial# environment variable in
some cases. Change the warp7 support to use this symbol, use this for
updating the rest of the imx7 code, and update the imx8 conditionals.
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/puma-rk3399_defconfig b/configs/puma-rk3399_defconfig
index a0a3059..afc54fe 100644
--- a/configs/puma-rk3399_defconfig
+++ b/configs/puma-rk3399_defconfig
@@ -46,6 +46,7 @@
CONFIG_ENV_IS_IN_MMC=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_SYS_MMC_ENV_DEV=1
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
CONFIG_SPL_DM_SEQ_ALIAS=y
CONFIG_ROCKCHIP_GPIO=y
CONFIG_SYS_I2C_ROCKCHIP=y