Patch merged into coreboot/master: e1b87a1 arm64 libhelpers: Add helper functions with el argument

the following patch was just integrated into master:
commit e1b87a103290115831226713b1711dcc956ae43d
Author: Furquan Shaikh 
Date:   Sun Sep 7 18:23:18 2014 -0700

arm64 libhelpers: Add helper functions with el argument

Allow read/write to registers at a given el. Also, make read/write registers at
    current el call this newly added function.

BUG=chrome-os-partner:30785
    BRANCH=None
    TEST=Compiles successfully

Change-Id: I98f35b8d3eb5e292ac895102ad91b675325c08c7
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 11d90df1fd92e03c25bfc463429a5f6a8d9d411d
    Original-Change-Id: I17de4c4f3bc1ee804422efe5f4703b4dd65b51f2
    Original-Signed-off-by: Furquan Shaikh 
    Original-Reviewed-on: https://chromium-review.googlesource.com/216904
    Original-Reviewed-by: Aaron Durbin 
    Original-Tested-by: Furquan Shaikh 
    Original-Commit-Queue: Furquan Shaikh 
    Reviewed-on: http://review.coreboot.org/9063
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/9063 for details.

-gerrit