Move all vendor's Kconfig into CCF menu section to prevent
new drivers putting their Kconfig files in a wrong place.

Some Kconfigs need to be modified at the same time to avoid build
warnings.
Signed-off-by: NJames Liao <jamesjj.liao@mediatek.com>
Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
[sboyd@codeaurora.org: Fix typos in commit message]
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>