ARM: dts: msm: Add VAF to the eeprom node

Add VAF entry to the eeprom nodes to avoid eeprom
power up failure. Also clean up eeprom nodes.

Signed-off-by: Ravi Kishore Tanuku <rktanuku@codeaurora.org>
Change-Id: I4a22d1be5f48e3db5df1e9b587e68c6901fe9fd5