cpu/x86/smm: Promote smm_subregion()

No need to limit these declarations to FSP. Both
PARALLEL_MP_INIT smm_relocate() and TSEG_STAGE_CACHE
can be built on top of this.

Change-Id: I7b0b9b8c8bee03aabe251c50c47dc42f6596e169
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
---
M src/drivers/intel/fsp1_1/car.c
D src/drivers/intel/fsp1_1/include/fsp/memmap.h
M src/drivers/intel/fsp1_1/raminit.c
M src/drivers/intel/fsp1_1/ramstage.c
M src/drivers/intel/fsp1_1/stage_cache.c
D src/drivers/intel/fsp2_0/include/fsp/memmap.h
M src/include/cpu/x86/smm.h
M src/soc/amd/picasso/cpu.c
M src/soc/amd/picasso/include/soc/northbridge.h
M src/soc/amd/picasso/ramtop.c
M src/soc/amd/picasso/romstage.c
M src/soc/amd/stoneyridge/cpu.c
M src/soc/amd/stoneyridge/include/soc/northbridge.h
M src/soc/amd/stoneyridge/ramtop.c
M src/soc/amd/stoneyridge/romstage.c
M src/soc/intel/apollolake/cpu.c
M src/soc/intel/apollolake/memmap.c
M src/soc/intel/apollolake/romstage.c
M src/soc/intel/braswell/cpu.c
M src/soc/intel/braswell/memmap.c
M src/soc/intel/braswell/northcluster.c
M src/soc/intel/cannonlake/include/soc/smm.h
M src/soc/intel/common/block/include/intelblocks/smm.h
M src/soc/intel/common/block/smm/smm.c
M src/soc/intel/denverton_ns/cpu.c
M src/soc/intel/denverton_ns/include/soc/smm.h
M src/soc/intel/denverton_ns/memmap.c
M src/soc/intel/denverton_ns/romstage.c
M src/soc/intel/icelake/include/soc/smm.h
M src/soc/intel/skylake/include/soc/smm.h
M src/soc/intel/skylake/memmap.c
M src/soc/intel/skylake/romstage/romstage_fsp20.c
32 files changed, 45 insertions(+), 161 deletions(-)