nativesdk.bbclass: handle PACKAGE_WRITE_DEPS

nativesdk.bbclass: handle PACKAGE_WRITE_DEPS

We want nativesdk packages to depend on correct recipes introduced
by PACKAGE_WRITE_DEPS, so do the same mapping just as we do for DEPENDS.

Before this change:
  nativesdk-glib-2.0 -> qemuwrapper-cross

After this change:
  nativesdk-glib-2.0 -> nativesdk-qemuwrapper-cross

This can fix do_populate_sdk failure complaining missing of
nativesdk-qemuwrapper. Error message is like below:

  NOTE: > Executing update_gio_module_cache-nativesdk intercept ...
  NOTE: Exit code 127. Output:
  /xxx/lib32-core-image-sato/1.0/intercept_scripts-xxxx/
  update_gio_module_cache-nativesdk: 13: nativesdk-qemuwrapper: not found

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>