[POWERPC] Allocate syscall number for sys_getcpu
I forgot to do this when wiring up the syscall.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
authored by Stephen Rothwell and committed by Paul Mackerras 4cd723b4 f57e8430