powerpc/ps3: Add __init to ps3_smp_probe

Add an __init annotation to the ps3_smp_probe() routine.
Fixes build warnings like these when
CONFIG_DEBUG_SECTION_MISMATCH=y:

WARNING: Section mismatch in reference from the function .ps3_smp_probe()

Signed-off-by: Geoff Levand <[e-mail]>
Signed-off-by: Benjamin Herrenschmidt <[e-mail]>

arch/powerpc/platforms/ps3/smp.c

···
 			" (%d)\n", __func__, __LINE__, cpu, msg, result);
 }
 
-static int ps3_smp_probe(void)
+static int __init ps3_smp_probe(void)
 {
 	int cpu;