Since the external toolchain is available at parse time, we can actually grab
the kernel version from the external toolchain sysroot and use that to
determine whether to apply the patch. Do so.
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
A patch in oe-core is needed, at this time, to fix builds with
linux-libc-headers from the 4.8 Linux kernel or newer, which is not the case
for most external toolchains. Unfortunately, this patch also breaks the build
of ppp with older linux-libc-headers, so we need to revert it. A note in the
README is added explaining how to disable this for external toolchains with
recent enough kernel libc headers.
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
