msm: ipa: fix filter table update bug

For RmNet and QCMAP concurrency scenario, filter table
update logic can override Q6 installed filter tables.
This breaks RmNet functionality. This commit fixes that
bug.

Change-Id: Iab1ff8c4531609df7a07e609da5c3b8669e3dd9c
Signed-off-by: Ravi Gummadidala <rgummadi@codeaurora.org>