ARM: dts: msm: Add Nominal plus clock support for GPU

Add new Nominal plus GPU frequency 465MHz.
Add GPU IB voting for NOM+ DDR.

Change-Id: I4342d72fde8c23ac7ed76967d59a861541d28ce7
Signed-off-by: Ananta Kishore K <akollipa@codeaurora.org>
Signed-off-by: Anshuman Dani <adani@codeaurora.org>