ARM: dts: msm: Fix camera eeprom configuration for sdm845 platform

Eeproms may need the vaf regulators for operation. The regulator node
takes care of enabling the gpios associated with the LDO.
Add vaf voltage levels and remove the vaf gpio from the eeprom node.

Change-Id: Ia08fc7675efd7f3aedef484447f3fe622bcca71d
Signed-off-by: Wei Ding <weiding@codeaurora.org>
Signed-off-by: Soundrapandian Jeyaprakash <jsoundra@codeaurora.org>