env: add SAVEENV as an alias of the CMD_SAVEENV symbol

Currently, testing whether to compile in support for saving the
environment is a bit awkward when one needs to take SPL_SAVEENV into
account, and quite a few storage drivers currently do not honour
SPL_SAVEENV.

To make it a bit easier to decide whether environment saving should be
enabled, introduce SAVEENV as an alias for the CMD_SAVEENV
symbol. Then one can simply use

  CONFIG_IS_ENABLED(SAVEENV)

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>

diff --git a/env/Kconfig b/env/Kconfig
index 8ab7be1..af63ac5 100644 (file)
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -3,6 +3,9 @@ menu "Environment"
 config ENV_SUPPORT
        def_bool y
 
+config SAVEENV
+       def_bool y if CMD_SAVEENV
+
 config ENV_IS_NOWHERE
        bool "Environment is not stored"
        default y if !ENV_IS_IN_EEPROM && !ENV_IS_IN_EXT4 && \