sdk.py: Fix undefined variable
"sdk_update" uses a variable newsdk_path, which was never declared.
This would cause the command:
devtool sdk-update <poky-sdk-latest>
to fail with an error:
NameError: global name 'newsdk_path' is not defined
The remedy is to declare newsdk_path as it was no doubt intended,
corresponding to the argument specifying <poky-sdk-latest>.
[YOCTO#9042]
Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
