amdfam10 boards: Call get_bus_conf() just once

It has to be called once before PIRQ and MP table generation.

Change-Id: I238c6b4810404d320b36d4f6b4a161c1ff11c8d3
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30630
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/advansus/a785e-i/mptable.c

@@ -49,8 +49,6 @@ static void *smp_write_config_table(void *v)
 
 	smp_write_processors(mc);
 
-	get_bus_conf();
-
 	mptable_write_buses(mc, NULL, &bus_isa);
 
 	/* I/O APICs:   APIC ID Version State   Address */