amdfam10 boards: Add Makefiles and fix resourcemap.c

Also remove global ramstage-y += get_bus_conf.c, this is
specific to amdfam10.

Change-Id: I49b604ebff6bcfe85518b2c3896ab798c3c7878d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30629
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/arch/x86/Makefile.inc

@@ -378,9 +378,6 @@ ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/smihandler.c),)
 smm-srcs += src/mainboard/$(MAINBOARDDIR)/smihandler.c
 endif
 endif
-ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/get_bus_conf.c),)
-ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/get_bus_conf.c
-endif
 
 ramstage-libs ?=