microcode: Unify rules to add microcode to CBFS once again

Now that cbfstool supports file alignment, we can use the conveniently
available <filename>-align handler, and remove the need to have a
separate rule in src/Makefile.inc just for adding the microcode.

We can also get rid of the layering violation of having the
CONFIG_PLATFORM_USES_FSP1_0 symbol in a generic src/cpu/ makefile.
Note that we still have a layering violation by the use of the
CONFIG_CPU_MICROCODE_CBFS_LOC symbol, but this one is acceptable
for the time being.

Change-Id: Id2f8c15d250a0c75300d0a870284cac0c68a311b
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/11526
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

Makefile.inc

@@ -567,7 +567,6 @@ $(obj)/coreboot.pre1: $(objcbfs)/bootblock.bin $$(prebuilt-files) $(FMAPTOOL) $(
 	-B $(objcbfs)/bootblock.bin \
 	$(CBFSTOOL_PRE1_OPTS)
 	$(prebuild-files) true
-	$(call add-cpu-microcode-to-cbfs,$@.tmp)
 	mv $@.tmp $@
 else
 prebuilt-files = $(foreach file,$(cbfs-files), $(call extract_nth,1,$(file)))