[coreboot-gerrit] Patch merged into coreboot/master: arch/x86: rename reset_vector -> _start

the following patch was just integrated into master:
commit 4330a9c8e52a00bf7b0b9ddd57717b7a39123ecf
Author: Aaron Durbin 
Date:   Wed Mar 2 15:13:12 2016 -0600

arch/x86: rename reset_vector -> _start

In order to align the entry points for the various stages
    on x86 to _start one needs to rename the reset_vector symbol.
    The section is the same; it's just a symbol change.

Change-Id: I0e6bbf1da04a6e248781a9c222a146725c34268a
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/13881
    Tested-by: build bot (Jenkins)
    Reviewed-by: Andrey Petrov

See https://review.coreboot.org/13881 for details.

-gerrit