These clocks are fixed rate board sources that should be in DT.
Add them.

Cc: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Reviewed-by: NAndy Gross <agross@codeaurora.org>
Signed-off-by: NAndy Gross <agross@codeaurora.org>