media: dvb: mpq: Fine-tune TSIF and TSPP buffers sizes

Maximum allowed size of BAM descriptor is 32K-1, the size
allocated by demux was changed accordingly. Notifications
from TSPP driver is set based on number of descriptors and
not on number of bytes.

TSIF buffer was enlarged to cope with 80Mbit/sec streams

Change-Id: Ic9a9f0a5144293ac30e5548bbbb4d284d72c3a9e
Signed-off-by: Hamad Kadmany <hkadmany@codeaurora.org>