Add support for SDRAM registers printing to bct_dump.

This adds human readable output for RAM controller registers default
values stored in a BCT file.

BUG=None
TEST=bct_dump burn-u-boot/bct/default.bct and check EMC_CFG value.

This CL depends on http://codereview.chromium.org/6625006/

Change-Id: I4451d17c144d0273d375e490511e2534accd6de1

Review URL: http://codereview.chromium.org/6626016
1 file changed