ARM: dts: msm: Add flags for FDE/PFE support

Add following flags
- support-fde
- support-pfe

These flags are needed to be set on targets that support
FDE (full disk encryption) and PFE (per file encryption)
respectively.

Change-Id: Ieed9979e16901b8d8357389b9e375826ae156034
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>