kbuild: drop cpuinit/cpuexit checks in modpost

With the removal of cpuinit/cpuexit we no longer need to
do section mismatch checks on these sections.

Drop it from modpost.

Change-Id: Ia567b9837b8d2ab2dc1db88437b644b66ff5834c
Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
revert hacks for the previous misuse of __cpuinit for hotplug only functions

Change-Id: I6ece8bec1f6615f53a07628be7dffdb65eeff113
Signed-off-by: Dennis Rassmann <showp1984@gmail.com>