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/board/ti/j721s2/j721s2.env b/board/ti/j721s2/j721s2.env
index 2ec652d..6825b14 100644
--- a/board/ti/j721s2/j721s2.env
+++ b/board/ti/j721s2/j721s2.env
@@ -1,10 +1,10 @@
-#include <environment/ti/ti_armv7_common.env>
-#include <environment/ti/mmc.env>
-#include <environment/ti/ufs.env>
-#include <environment/ti/k3_dfu.env>
+#include <env/ti/ti_armv7_common.env>
+#include <env/ti/mmc.env>
+#include <env/ti/ufs.env>
+#include <env/ti/k3_dfu.env>
 
 #if CONFIG_CMD_REMOTEPROC
-#include <environment/ti/k3_rproc.env>
+#include <env/ti/k3_rproc.env>
 #endif
 
 default_device_tree=ti/k3-j721s2-common-proc-board.dtb