This reverts commit ddacf5ef.
As when booting the kernel under Amazon EC2 as an HVM guest it ends up
hanging during startup. Reverting this we loose the fix for kexec
booting to the crash kernels.

Fixes Canonical BZ #901305 (http://bugs.launchpad.net/bugs/901305)
Tested-by: NAlessandro Salvatori <sandr8@gmail.com>
Reported-by: NStefan Bader <stefan.bader@canonical.com>
Acked-by: NIan Campbell <Ian.Campbell@citrix.com>
Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>