msm: mdss: Enable continuous splash on bridge chip

If continuous splash has been enabled from bootloader,
then we need to skip the call to power on the bridge chip.
This will reset the bridge chip and break continuous splash
use case.

Change-Id: I7109d45f1f613f064c86d07f6adae39eb310d5a5
Signed-off-by: Siddharth Zaveri <szaveri@codeaurora.org>