CHROMIUM: Enable configs to validate FastRPC and CDSP

These configs are required to build FastRPC and validate FastRPC
and CDSP

BUG=b:132147953
TEST=None

Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@linaro.org>
Signed-off-by: Abhinav Asati <asatiabhi@codeaurora.org>
(cherry picked from commit ff3f899a42d5cf8ee746aa9e78deaf94b0d60f49
https://git.linaro.org/people/khasim.mohammed/kernel.git/log/?h=chromeos-4.14-gw-rpcdsp

)
Signed-off-by: Abhinav Asati <asatiabhi@codeaurora.org>
Change-Id: Ic8ebe62c7304407199fe090c8015e56bb7a20290
Signed-off-by: Vamsi Singamsetty <vamssi@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/1557963


Reviewed-by: Zhihong Yu <zhihongyu@chromium.org>
Commit-Queue: Zhihong Yu <zhihongyu@chromium.org>
Tested-by: Zhihong Yu <zhihongyu@chromium.org>