Kconfig: support CONFIG_PLATFORM_AUTO

Support automotive platform features. Automotive
market has aggressive requirement on booting KPI. So
we need to remove anything that blocks us from booting
linux in parallel.

Change-Id: I1b7e9edb6e79629655861ab8575b0a606ddf97d9
Signed-off-by: Jiacheng Zheng <jiaczhen@codeaurora.org>