drivers/crb: Check for PTT before attempting to initialize CRB TPM

We can assume that platforms, which select HAVE_INTEL_PTT, will not
have any other CRB TPM than PTT. Check whether PTT is available before
forcefully initializing the TPM and selecting the CRB interface in the
TPM configuration registers.

Change-Id: If0ec6217b0e321b7d7a9410b70defde3c3195fc3
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80453
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Kopeć <michal.kopec@3mdeb.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

0 files changed, 0 insertions, 0 deletions