The CEC code has its claws in a couple of routines in mce/core.c.
Convert it to just register itself on the normal MCE notifier chain.

 [ bp: Make cec_add_elem() and cec_init() static. ]
Signed-off-by: NTony Luck <tony.luck@intel.com>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Tested-by: NTony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200214222720.13168-3-tony.luck@intel.com