msm: ipa: fix for missing tx completion

Due to incorrect SPS end-point connection setting, last TX packet on
data path was not getting TX completed even though BAM has consumed the
descriptor. This commit fixes the connection setting issue.

Change-Id: I2f4642e4fafab491e0627d4fa82f558b53f60774
Signed-off-by: Ravi Gummadidala <rgummadi@codeaurora.org>