hal may need some kernel headers, thus we need virtual/kernel as its
dependency.
(From OE-Core rev: b5db50e280e2547f5428440be5446c4ad267aeef)
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>