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/origen_defconfig b/configs/origen_defconfig
index 53257d6..3c59b9b 100644
--- a/configs/origen_defconfig
+++ b/configs/origen_defconfig
@@ -3,4 +3,5 @@
 CONFIG_TARGET_ORIGEN=y
 CONFIG_DEFAULT_DEVICE_TREE="exynos4210-origen"
 CONFIG_SPL=y
+CONFIG_CMD_SETEXPR=y
 CONFIG_OF_CONTROL=y