Patch merged into coreboot/master: t132: Correct dma_busy function

the following patch was just integrated into master:
commit d9c7a7b4dadc088c49a5668b13bb74fc6eea8079
Author: Tom Warren 
Date:   Fri Jul 17 08:19:18 2015 -0700

t132: Correct dma_busy function

In case of continuous mode, use STA_ACTIVITY bit to determine if DMA
    operation is complete. However, in case of ONCE mode, use STA_BSY bit
    to determine if DMA operation on the channel is complete.

This change was propogated from T210, commit ID fe48f094

BUG=None
    BRANCH=None
    TEST=Ryu/Rush build OK.

Change-Id: I13073cc12ed0a6390d55b00c725d1cc7d0797e23
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: aab62d5148b57fd1e05c1e838eafe8fdee431ef8
    Original-Change-Id: I7388e9fd73d591de50962aaefc5ab902f560fc6f
    Original-Signed-off-by: Tom Warren 
    Original-Reviewed-on: https://chromium-review.googlesource.com/286468
    Original-Reviewed-by: Furquan Shaikh 
    Reviewed-on: http://review.coreboot.org/11017
    Reviewed-by: Furquan Shaikh 
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel

See http://review.coreboot.org/11017 for details.

-gerrit