global: Migrate CONFIG_EXTRA_ENV_SETTINGS to CFG

Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/kontron_sl28.h b/include/configs/kontron_sl28.h
index a073a06..0d293f3 100644
--- a/include/configs/kontron_sl28.h
+++ b/include/configs/kontron_sl28.h
@@ -61,7 +61,7 @@
 	func(PXE, pxe, 0)
 #include <config_distro_bootcmd.h>
 
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CFG_EXTRA_ENV_SETTINGS \
 	"env_addr=0x203e0004\0" \
 	"envload=env import -d -b ${env_addr}\0" \
 	"install_rcw=source 20200000\0" \