Patch merged into coreboot/master: libpayload: timer: cast cpu_khz to make sure 64bit math is used

the following patch was just integrated into master:
commit 61dac130b2319301969ddf2cb471913045cb9378
Author: Patrick Georgi 
Date:   Wed Jan 4 21:59:42 2017 +0100

libpayload: timer: cast cpu_khz to make sure 64bit math is used

Change-Id: Iaf84de2330b433076a66c22fa72ffb45e957c0dc
    Signed-off-by: Patrick Georgi 
    Found-by: Coverity Scan #1261177
    Reviewed-on: https://review.coreboot.org/18034
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See https://review.coreboot.org/18034 for details.

-gerrit