The include file for input clock in the example was missing, breaking the
validation.
Signed-off-by: NLubomir Rintel <lkundrak@v3.sk>
Reported-by: NRob Herring <robh+dt@kernel.org>
Link: https://lore.kernel.org/r/20200605065258.567858-1-lkundrak@v3.skAcked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>