Patch merged into coreboot/master: 83fd239 exynos5420: update I2C code, add HSI2C/USI support

the following patch was just integrated into master:
commit 83fd23925509026734833c9d8d28890029899458
Author: David Hendricks 
Date:   Fri Jun 14 19:16:56 2013 -0700

exynos5420: update I2C code, add HSI2C/USI support

This updates the low-level I2C code to handle the new high-speed
    HSI2C/USI inteface. It also outputs a bit more error information
    when things go wrong. Also adds some more error prints. Timeouts
    really need to be noted.

In hsi2c_wait_for_irq, order the delay so that we do an initial
    sleep first to avoid an early-test that was kicking us out of the
    test too soon. We got to the test before the hardware was ready
    for us. Finally, test clearing the interrupt status register every time
    we wait for it on the write. Works.

Change-Id: I69500eedad58ae0c6405164fbeee89b6a4c6ec6c
    Signed-off-by: Ronald G. Minnich 
    Signed-off-by: David Hendricks 
    Signed-off-by: Gabe Black 
    Reviewed-on: http://review.coreboot.org/3681
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/3681 for details.

-gerrit