msm: vidc: Avoid suspend only if firmware is in bad state

Without this change, driver will skip suspend even when
firmware is not loaded. Skip suspend only if firmware is
loaded and is in bad state.

Change-Id: I7c8bbc3bb2590cf676ccb28a28ec9d078a5cb54c
Signed-off-by: Arun Menon <avmenon@codeaurora.org>