[POWERPC] Change topology_init() to a subsys_initcall

Change the powerpc version of topology_init() from an __initcall to
a subsys_initcall to match all other architectures.

Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
1 file changed