env: Use include/env for text-environment includes

The 'environment' word is too long. We mostly use 'env' in U-Boot, so use
that as the name of the include directory too.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/include/configs/omapl138_lcdk.h b/include/configs/omapl138_lcdk.h
index af00935..fc2655a 100644
--- a/include/configs/omapl138_lcdk.h
+++ b/include/configs/omapl138_lcdk.h
@@ -135,7 +135,7 @@
 	"fdtaddr=0xc0600000\0" \
 	"scriptaddr=0xc0600000\0"
 
-#include <environment/ti/mmc.h>
+#include <env/ti/mmc.h>
 
 #define CFG_EXTRA_ENV_SETTINGS \
 	DEFAULT_LINUX_BOOT_ENV \