Enable building CC3200 SDK driver peripheral library files in Zephyr.
The SDK provides convenience functions to access CC3200 hardware
peripherals, and header files with register definitions.
Jira: ZEP-1109
Change-Id: I89f1485b9f35320a253ae211a27168bb2288c8b7
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>