refactor(ufs): adds a function for fdeviceinit

time taken for device init varies based on different devices,
instead of waiting for 200ms - we can poll on fdevice init
until it gets cleared, similar to what linux does

Change-Id: I571649231732fde0cd6d5be89b6f14fe905fcaff
Signed-off-by: anans <anans@google.com>
2 files changed