powerpc/86xx: fsl_pcibios_fixup_bus requires CONFIG_PCI

Function fsl_pcibios_fixup_bus() is available only if PCI is enabled.  The
MPC8610 HPCD platform file was not protecting the assigned with an #ifdef,
which results in a link failure when PCI is disabled.  Every other platform
already has this #ifdef.
Signed-off-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/86xx/mpc8610_hpcd.c

@@ -353,5 +353,7 @@ define_machine(mpc86xx_hpcd) {
 	.time_init		= mpc86xx_time_init,
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= udbg_progress,
+#ifdef CONFIG_PCI
 	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
 };