configs: enable spl support wrt env device

nand device needed for mmc config to access nand
for write and update so enabling SPL_SUPPORT to mmc
or nand is wrt to env device rather nand driver check.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/include/configs/imx6-engicam.h b/include/configs/imx6-engicam.h
index 0c45e06..5f43dfb 100644
--- a/include/configs/imx6-engicam.h
+++ b/include/configs/imx6-engicam.h
@@ -208,7 +208,7 @@
 
 /* SPL */
 #ifdef CONFIG_SPL
-# ifdef CONFIG_NAND_MXS
+# ifdef CONFIG_ENV_IS_IN_NAND
 #  define CONFIG_SPL_NAND_SUPPORT
 # else
 #  define CONFIG_SPL_MMC_SUPPORT