h264: CB2 fixed 23.976 fps was incorrectly calculated [1/1]

PD#SWPL-188318

Problem:
The calculation error of duration for 23.97 fps
file results in playback unsmooth

Solution:
When the frame_rate is 47, setting fps to
23.976 to resolve this issue.

Verify:
OHM

Change-Id: I18edd14700c15397f047469d52f8c3608a0d9160
Signed-off-by: Peng Yixin <yixin.peng@amlogic.com>
1 file changed