env: Add CONFIG_SYS_RELOC_GD_ENV_ADDR symbol

Today in initr_reloc_global_data() we use some non-obvious tests to
determine if we need to relocate the env_addr within gd or not.  In
order to facilitate migration of other symbols to Kconfig we need to
introduce a new symbol for this particular use case.

Cc: Wolfgang Denk <wd@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/e2220-1170_defconfig b/configs/e2220-1170_defconfig
index 34c9c85..c50598a 100644
--- a/configs/e2220-1170_defconfig
+++ b/configs/e2220-1170_defconfig
@@ -20,6 +20,7 @@
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra210-e2220-1170"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
 CONFIG_DFU_SF=y