x86: cleanup remaining cpumask_t code in mce_amd_64.c

Impact: Reduce memory usage, use new cpumask API.

Use cpumask_var_t for 'cpus' cpumask in struct threshold_bank and update
remaining old cpumask_t functions to new cpumask API.

Signed-off-by: Mike Travis <travis@sgi.com>
1 file changed