arch: x86: core: include kernel.h first

There seems to be an unresolved dependency chain in some x86 arch
headers, this file needs kernel.h to be included before arch_data/func.
This patch is a workaround, but problem should be fixed properly at some
point.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
1 file changed