Move setexpr to Kconfig

Another shell scripting command that has not been moved.

Moved using tools/moveconfig.py using these settings:

CMD_SETEXPR bool n y

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/configs/canyonlands_defconfig b/configs/canyonlands_defconfig
index e936d7b..cab4f8b 100644
--- a/configs/canyonlands_defconfig
+++ b/configs/canyonlands_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_CANYONLANDS=y
 CONFIG_CANYONLANDS=y
 CONFIG_DEFAULT_DEVICE_TREE="canyonlands"
+CONFIG_CMD_SETEXPR=y
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_REGEX=y