Patch merged into coreboot/master: rockchip: refactor to sharing code among similar SOCs

the following patch was just integrated into master:
commit 0a36022b6919c93cb08dec08bd3d61bde4e42db5
Author: Vadim Bendebury 
Date:   Mon Mar 28 22:57:26 2016 -0700

rockchip: refactor to sharing code among similar SOCs

Upcoming designs are based on similar SOCs, this patch moves code
    which can be reused into a common directory under soc/rockchip.

Changing spi.h to include stdder.h, as this is were check_member() is
    defined, this becomes necessary later when the new SOC code is added.

Renaming UART driver private functions not to be bound to any
    particular SOC.

BUG=none
    BRANCH=none
    TEST=the refactored code works fine on the new platform (with the rest
         of the patches applied).

Change-Id: I39a505aecda8849daa58a8eca0e44a5243664423
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: f63f2582042ac115481207ddf329ea2e3260e55e
    Original-Change-Id: I3a1139305354d460492b25a45f3da315a9a0b49e
    Original-Signed-off-by: Vadim Bendebury 
    Original-Reviewed-on: https://chromium-review.googlesource.com/335408
    Original-Reviewed-by: Julius Werner 
    Original-Reviewed-by: Patrick Georgi 
    Reviewed-on: https://review.coreboot.org/14235
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See https://review.coreboot.org/14235 for details.

-gerrit