mb/google/nissa: Change TPM I2C freqeuncy to 1 MHz

Change the TPM I2C freqeuncy to 1 MHz for nivviks and nereid, and in
the baseboard. Other nissa devices will be changed after verification.

This saves 11 ms of boot time on nivviks and nereid.

400 kHz:
504:finished TPM initialization                       272,304 (35,730)
...
512:finished TPM PCR extend                           526,250 (23,729)
513:starting locking TPM                              526,250 (0)
514:finished locking TPM                              535,106 (8,855)
  6:end of verified boot                              543,927 (8,821)

1 MHz:
504:finished TPM initialization                       266,293 (30,747)
...
512:finished TPM PCR extend                           513,711 (20,108)
513:starting locking TPM                              513,711 (0)
514:finished locking TPM                              521,311 (7,599)
  6:end of verified boot                              528,893 (7,581)

BUG=b:249201598
TEST=On nivviks and nereid, all timing requirements in the spec are met.
Frequencies:
nivviks - 972.01 kHz
nereid  - 968.99 kHz

Change-Id: I9dd783527d4215ed7d79d69853a1f321ea2d8a28
Signed-off-by: Reka Norman <rekanorman@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67942
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>

0 files changed, 0 insertions, 0 deletions