Replace the "fake" clocks defined in the "bcm11351.dtsi" device tree
file with real definitions backed by the new BCM281xx clock driver.
Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Matt Porter <mporter@linaro.org> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Signed-off-by: Matt Porter <mporter@linaro.org>