uboot-imx

tools: moveconfig: do not cleanup headers in include/generated

The files in include/generated are generated during build and removed
by "make mrproper", so it has no point to touch them by this tool.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>