i2c: virtio: Avoid hang by using interruptible completion wait

i2c: virtio: Avoid hang by using interruptible completion wait

The current implementation uses wait_for_completion(), which can cause
the caller to hang indefinitely if the transfer never completes.

Switch to wait_for_completion_interruptible() so that the operation can
be interrupted by signals.

Fixes: 84e1d0bf1d71 ("i2c: virtio: disable timeout handling")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: <stable@vger.kernel.org> # v5.16+
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/b8944e9cab8eb959d888ae80add6f2a686159ba2.1751541962.git.viresh.kumar@linaro.org