add .clang-format

Add .clang-format for automatic style.

Change-Id: I6d240009370179b5b8f1f646b0476a059ec6aa85
Signed-off-by: Patrick Venture <venture@google.com>

Add code to access P9 CFAM registers

Change-Id: Idd98d016f0d6a246b516b4850e887991c771ae16
Signed-off-by: Matt Spinler <spinler@us.ibm.com>