mrst: add cpu detection and earlyprintk support for cloverview

mrst: add cpu detection and earlyprintk support for cloverview

BZ: 15575

Cloverview SOC use CPUID=0x30650 which translates x86_model to 0x35. The
Medfield kernel currently does not support this x86_model number hence
it won't be able to detect Cloverview SOC properly. Also, there is a memory
map change on Cloverview's SPI1 interface hence earlyprintk won't work on
Cloverview SOC.

This patch adds CPU detection and earlyprintk support for Cloverview SOC.

Change-Id: I1ce935aeee4b42a02b62e14c01682806d16e0acb
Signed-off-by: Leonard D Mai <leonard.mai@intel.com>
Reviewed-by: Pierre Tardy <pierre.tardy@intel.com>
Reviewed-by: Yong Yao <yong.yao@intel.com>
Tested-by: Siva Prasath Ponnusamy <siva.prasath.ponnusamy@intel.com>
Reviewed-on: http://android.intel.com:8080/25443
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Seibel, Eric <eric.seibel@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>