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/ks2_evm/k2l_evm.env b/board/ti/ks2_evm/k2l_evm.env
index ddb5cd4..e8a803a 100644
--- a/board/ti/ks2_evm/k2l_evm.env
+++ b/board/ti/ks2_evm/k2l_evm.env
@@ -1,5 +1,5 @@
-#include <environment/ti/ti_armv7_common.env>
-#include <environment/ti/ti_armv7_keystone2.env>
+#include <env/ti/ti_armv7_common.env>
+#include <env/ti/ti_armv7_keystone2.env>
 
 findfdt=setenv fdtfile ${name_fdt}
 boot=ubi