soc/intel/common/block/*/Kconfig: Guard options with if-blocks

soc/intel/common/block/*/Kconfig: Guard options with if-blocks

The usual structure of these files is a global enable symbol, usually
followed by an if-block which contains all other dependent symbols.

Use this instead of having a `depends on` line to each symbol. Guard all
symbols, even if they originally were not guarded, since they don't do
anything useful unless the global enable option is selected.

Change-Id: If5347187b07a46192f0063011ab197b5047f555f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45043
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>