nb/amd/amdk8: Link raminit_f.c

For this debug.c needs to be linked too.

Change-Id: I9cd1ffff2c39021693fe1d5d3f90ec5f70891f57
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19030
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/cpu/amd/model_fxx/init_cpus.c

@@ -17,6 +17,10 @@
 #include "option_table.h"
 #endif
 
+#if IS_ENABLED(CONFIG_K8_REV_F_SUPPORT)
+#include <northbridge/amd/amdk8/f.h>
+#endif
+
 typedef void (*process_ap_t) (u32 apicid, void *gp);
 
 //core_range = 0 : all cores