cpuinfo_op: consolidate extern declaration
All the architectures supported by the kernel also support
/proc/cpuinfo. Only a couple actually declare the seq_operations
as extern. All the others will produce a sparse warning like:
warning: symbol 'cpuinfo_op' was not declared. Should it be static?
Fix all the warnings and consolidate the declaration by putting it
in <linux/seq_file.h>.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>