msm: ipa: EOT based on packet threshold

Request GSI HW for EOT based on packet threshold
in addition to time threshold which is currently in use.
This change allows scaling uplink data rates.

Change-Id: Ia7fe53f5944b1aee4ab58904289f391b7f4559db
Acked-by: Ady Abraham <adta@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>