msm: ipa3: fix qmap deaggregation issue

With GRO enable, ipa3 still use default
aggr_byte_limit to calculates the
rx_buff_sz and configures wrong channel
righ size in GSI. The fix is to use
the right aggr_byte_limit which netmgrd
configured.

Change-Id: I9f804a122090ea4340f7873a5aa276dff00cbcb7
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>