AGESA boards: Drop get_bus_conf.c files

The only remaining purpose for get_bus_conf() was to fill in obscure
bus_sb800 (etc.) arrays containing partial PCI bus enumeration. Complete
enumeration is available in devicetree and PCI configuration space so
discard these arrays.

Change-Id: I733115940afba3a50c58aedb9a04ecf5082b1234
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6360
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

src/cpu/amd/agesa/amd_late_init.c

@@ -31,8 +31,6 @@
 #include <sb_cimx.h>
 #endif
 
-void get_bus_conf(void);
-
 static void agesawrapper_post_device(void *unused)
 {
 	if (acpi_is_wakeup_s3())
@@ -40,9 +38,6 @@ static void agesawrapper_post_device(void *unused)
 
 	AGESAWRAPPER(amdinitlate);
 
-	/* Preparation for write_tables(). */
-	get_bus_conf();
-
 #if IS_ENABLED(CONFIG_NORTHBRIDGE_AMD_AGESA_FAMILY_16KB)
 	device_t dev;
 	u32 value;