[IA64] change sh_change_coherence oemcall to use nolock

Change sn_change_coherence's ia64_sal_oemcall to the nolock variety since
PROM does the locking for this function internally.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
1 file changed