ARM: dts: msm: Update GDSCs with clock names for SDMMAGPIE

There are clocks required to be enabled before accessing the GDSCs and also
the camera GDSCs require to be in HW mode. Thus add support for the same.

Change-Id: I38382f5c9d1769193c6b9b23c62b7b0f03eb5ab7
Signed-off-by: Taniya Das <tdas@codeaurora.org>