clk: qcom: add MDSS PLL support for msmfalcon

Add the msmfalcon compatible string to MDSS PLL driver dt
table list so that MDSS PLL driver initialization takes place
for msmflacon platform.

Change-Id: I806456737485dfcbca8a71d59db0927bbd843708
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>