drivers: soc: Add new config option for SOC_INFO

Add a new config option for SOC_INFO so that drivers
can check for the feature and only enable the code
in case it this is defined.

Change-Id: I73d889a55d90440b060ece4339aa3f28de05ab0a
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>