[coreboot] Patch merged into coreboot/master: bba8090 armv7/exynos/snow: new cache maintenance API

the following patch was just integrated into master:
commit bba809042191bd3e421bdec0b974ce697e85bcba
Author: David Hendricks 
Date:   Thu Mar 14 15:24:57 2013 -0700

armv7/exynos/snow: new cache maintenance API

This adds a new API for cache maintenance operations. The idea is
    to be more explicit about operations that are going on so it's easier
    to manage branch predictor, cache, and TLB cleans and invalidations.

Also, this adds some operations that were missing but required early
    on, such as branch predictor invalidation. Instruction and sync
    barriers were wrong earlier as well since the imported API assumed
    we compield with -march=armv5 (which we don't) and was missing
    wrappers for the native ARMv7 ISB/DSB/DMB instructions.

For now, this is a start and it gives us something we can easily use
    in libpayload for doing things like cleaning and invalidating dcache
    when doing DMA transfers.

TODO:
    - Set cache policy explicitly before re-enabling. Right now it's left
      at default.
    - Finish deprecating old cache maintenance API.
    - We do an extra icache/dcache flush when going from bootblock to
      romstage.

Change-Id: I7390981190e3213f4e1431f8e56746545c5cc7c9
    Signed-off-by: David Hendricks 
    Reviewed-on: http://review.coreboot.org/2729
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

Build-Tested: build bot (Jenkins) at Tue Mar 19 20:03:30 2013, giving +1
Reviewed-By: Ronald G. Minnich  at Tue Mar 19 22:23:45 2013, giving +2
See http://review.coreboot.org/2729 for details.

-gerrit