cpumask: Use accessors code: sparc

Impact: use new API

Use the accessors rather than frobbing bits directly.  Most of this is
in arch code I haven't even compiled, but it is mostly straightforward.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>

diff --cc arch/sparc/kernel/smp_32.c
Simple merge

diff --cc arch/sparc/kernel/sun4d_smp.c
Simple merge

diff --cc arch/sparc/kernel/sun4m_smp.c
Simple merge