powerpc: Fix vio build warnings
powerpc: Fix vio build warnings

arch/powerpc/kernel/vio.c:1034: warning: function declaration isnât a prototype
arch/powerpc/kernel/vio.c:1035: warning: function declaration isnât a prototype

Signed-off-by: Nathan Lynch <e04de97a81056a5c7ecb3646886e1cc27299320d@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs