[coreboot-gerrit] Patch merged into coreboot/master: drivers/i2c/tpm: Fix error handling for tis structure not initialized

the following patch was just integrated into master:
commit 112ab9183754a81c8100fcc37593ef4905a9d3a3
Author: Duncan Laurie 
Date:   Fri Sep 2 14:45:53 2016 -0700

drivers/i2c/tpm: Fix error handling for tis structure not initialized

If the TPM completely fails to respond then the vendor structure may not
    have assigned handlers yet, so catch that case and return error so the
    boot can continue to recovery mode instead of asserting over and over.

Change-Id: If3a11567df89bc73b4d4878bf89d877974044f34
    Signed-off-by: Duncan Laurie 
    Reviewed-on: https://review.coreboot.org/16416
    Reviewed-by: Aaron Durbin 
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/16416 for details.

-gerrit