soc/amd/stoneyridge: Configure FCH for TPM

In preparation for moving AGESA calls out of the bootblock:
* Add sb_tpm_decode to enable FCH decoding of TPM 1.2 regions and Legacy
TPM IO 0x7f-0x7e and 0xef-0xee
* Modify sb_tpm_decode_spi to additionally call sb_tpm_decode.

BUG=b:65442212
BRANCH=master
TEST=abuild, build Gardenia, build and boot Grunt (with other changes
to call code not committed at this time)

Change-Id: I0e2399e113c765393209dd11fd835fc758cf3029
Signed-off-by: Garrett Kirkendall <garrett.kirkendall@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/25027
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
2 files changed