Patch merged into coreboot/master: amd/mct/ddr2: Remove orphaned Tab_TrefT_k variable

the following patch was just integrated into master:
commit 17b66c384618c52185fa1ca9ef84101e84b0f4be
Author: Timothy Pearson 
Date:   Tue Jan 10 16:24:56 2017 -0600

amd/mct/ddr2: Remove orphaned Tab_TrefT_k variable

The orphaned Tab_TrefT_k causes a failure to build due to
    an unused variable warning on GCC 6.  Remove this variable.

Change-Id: Ida680a6a3bc2b135755dd582da8c6edb8956b6ff
    Signed-off-by: Timothy Pearson 
    Reviewed-on: https://review.coreboot.org/18094
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth 
    Tested-by: Raptor Engineering Automated Test Stand 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/18094 for details.

-gerrit