intel soc,southbridge: Add Kconfig to set TSBS in IFD during build

To modify the Top Swap Block Size in the FD (if provided and
CONFIG_HAVE_IFD_BIN=y), set the following Kconfig variables:
- CONFIG_INTEL_HAS_TOP_SWAP
- CONFIG_INTEL_ADD_TOP_SWAP_BOOTBLOCK
- CONFIG_INTEL_TOP_SWAP_BOOTBLOCK_SIZE
- CONFIG_INTEL_IFD_SET_TOP_SWAP_BOOTBLOCK_SIZE

Needed for the bootblock redundancy feature suggested at
https://mail.coreboot.org/archives/list/coreboot@coreboot.org/thread/C6JN2PB7K7D67EG7OIKB6BBERZU5YV35/

TEST=build VP66xx with custom Kconfig, check if TSBS is modified in FD

Change-Id: I94d3d3e2511a7e56392a9e34f845ae91602ce7f1
Upstream-Status: Backport [CB:89493]
Signed-off-by: Filip Gołaś <filip.golas@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89493
Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>

src/southbridge/intel/common/firmware/Makefile.mk

@@ -66,6 +66,7 @@ else
 	printf "    DD         Adding Intel Firmware Descriptor\n"
 	dd if=$(IFD_BIN_PATH) \
 		of=$(obj)/coreboot.pre conv=notrunc >/dev/null 2>&1
+
 ifeq ($(CONFIG_IFDTOOL_DISABLE_ME),y)
 	printf "    IFDTOOL    set AltMeDisable/HAP bit\n"
 	$(objutil)/ifdtool/ifdtool \
@@ -73,6 +74,7 @@ ifeq ($(CONFIG_IFDTOOL_DISABLE_ME),y)
 		--altmedisable 1 \
 		-O $(obj)/coreboot.pre \
 		$(obj)/coreboot.pre
+
 endif
 ifeq ($(CONFIG_VALIDATE_INTEL_DESCRIPTOR),y)
 	printf "    IFDTOOL    validate IFD against FMAP\n"