vulkan: Advertise present modes based on actual capabilities

Now that all the infrastructure is in place, we can advertise
the correct set of present modes. These are:

- mailbox, always
- fifo, always (required by spec)
- shared demand refresh, if the driver can do it
- shared continuous refresh, if the driver can do it

V2: Switch from std::vector to android::Vector (thanks Ian)
V3: Single flag

Test: build
Change-Id: I4df43dd0b0067ef7ae7d5ac0535eb9f8f311dee3