[PATCH v4] build: create $(PKG_SYMVERS_DIR) if non-existent

[Hannu Nyman]

Sebastian Kemper kirjoitti 18.11.2020 klo 23.58:
> Commit 5d76065 moved the creation of the symvers directory to
> include/kernel-build.mk. This is fine when building from scratch. But
> when unpacking an SDK the directory doesn't exist and because the kernel
> won't be built (again) this directory will not be created by the build
> system, causing build failure if make tries to copy files into it.
>
> This moves the creation of the symvers directory back into
> include/kernel.mk so that the directory is created in any case.

Hopefully somebody with commit rights soon merges a version of the patch, as 
popular packages like openvpn and openssl have now been unavailable for 
almost a week (since last Friday) for users who try to install them with opkg 
or use them in imagebuilder.