ARM: dts: msm: include camera dtsi for 8917 TMO

Include camera related device dtsi for msm8917
TMO project. Add flash device node. Correct
power supply for rear sensor.

CRs-Fixed: 1060391

Change-Id: I48c8c71a168d0bfa06f3c66004d7620e08f0cd7d
Signed-off-by: Kui Wang <kuiw@codeaurora.org>
Signed-off-by: Lei Yuan <lyuan@codeaurora.org>