ARM: dts: msm: Add gfx3d_clk to toggle memories for MSMGold

The core and periph memories needs to be toggle along with the oxili gdsc,
so add the oxili_gfx3d_clk for the same.

Change-Id: Ibb7d304465c7c11c5b54345e861344c35e3bdc8c
Signed-off-by: Taniya Das <tdas@codeaurora.org>