[MM][MSE] seek offset not synced to actual browser seek time

[MM][MSE] seek offset not synced to actual browser seek time

CAPI player_set_position as to be called with actual browser seek time
not with user seeked time. Otherwise CAPI will wait for
(|actual_browser_seek_time| - |seek_offset_|) milliseconds buffer.

Original Patch: http://suprem.sec.samsung.net/gerrit/#/c/53159/

Bug: http://web.sec.samsung.net/bugzilla/show_bug.cgi?id=14835

Reviewed by: msu.koo, sm.venugopal, sns.park

Change-Id: I878697fdc98f259a02b9849bc47955464aec2799
Signed-off-by: k2.nagaraju <k2.nagaraju@samsung.com>