Add fps print in glimagesink

In GST-1.6, Pipeline will set start time to 0 when state
change form PAUSE to READY, so get start time in state change
PLAYING_PAUSE.

Upstream-Status: Inappropriate [i.MX specific]

Signed-off-by: Haihua Hu <b55597@freescale.com>

Conflicts:
	ext/gl/gstglimagesink.h
2 files changed