ARM: dts: msm: enable continuous display for MSM8916 SKUI

Add the continuous display property in dtsi file, so mdss driver
can take over the display from bootloader directly.

Change-Id: I985eebbe7bc6395f9f2f6e54250f3c9c4445bb40
Signed-off-by: Shuo Yan <shuoy@codeaurora.org>