msm: kgsl: Print queued timestamp for fence timeout debugging

Print queued timestamp along with the retired timestamp of the
context to which a fence belongs. This helps in fence timeout
debugging.

Change-Id: I972cbf0022f8f8dccecb9694da6bb18dfe3ccae4
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>