msm: 8960: Add dummy clocks for 8960

Current 8960 devices have all clocks enabled by default. Add
dummy clk_lookup mappings for devices so that driver authors
can link up their devices to clocks.

Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>