ARM: dts: msm: update the MDSS VBIF configuration for msm8916

On msm8916, there is no need to configure the DDR_FORCE_CLK_ON
register to force the VBIF clocks ON. Also, remove the DT entries for
register settings of DDR_OUT_MAX_BURST and DDR_RND_RBN_QOS_ARB since
the programmed value for these registers is same as the reset value.

Change-Id: I8ec00dc6787f88c7b63902facb6c14e96632fb2b
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>