mm-video: vdec: Handle time stamp check for NC-VOP

When vidc.dec.debug.ts is enabled, pop the time stamp
from the TS list only when the FBD length is greater than 0.
This handles the not coded VOP FBD case where both filled
length and time stamp received from the driver are zero.

CRs-Fixed: 500471

Change-Id: I20f731c0dfe44d57471299b6531fa32c64d8ab3c
1 file changed