Patch merged into coreboot/master: a904f9e ec/google: Isolate EC bus protocol implementation.

the following patch was just integrated into master:
commit a904f9ef691062a43baa5542cf63daed45a1185a
Author: Hung-Te Lin 
Date:   Thu Apr 11 15:58:12 2013 +0800

ec/google: Isolate EC bus protocol implementation.

The Chrome EC can be connected by different types of bus like LPC / I2C / SPI,
    and the current implementation is only for LPC.

To support other types, we must first isolate the LPC protocol stuff and add
    configuration variable (EC_GOOGLE_CHROMEEC_LPC) to specify bus type.

Verified by building google/link (with chromeec) configuration successfully.

Change-Id: Ib2920d8d935bcc77a5394e818f69e9265e26e8a0
    Signed-off-by: Hung-Te Lin 
    Reviewed-on: http://review.coreboot.org/3068
    Reviewed-by: Paul Menzel 
    Tested-by: build bot (Jenkins)
    Reviewed-by: David Hendricks

Build-Tested: build bot (Jenkins) at Thu Apr 11 10:54:59 2013, giving +1
Reviewed-By: David Hendricks  at Fri Apr 12 04:57:39 2013, giving +2
See http://review.coreboot.org/3068 for details.

-gerrit