msm: ipa: enable APPS wakeup due to IPA-BAM->A7 interrupt

This is needed to wake APPS and service this interrupt in a
timely manner

Change-Id: I7b976e43b5d43429981c4a7899d56e09902c724c
Signed-off-by: Ravi Gummadidala <rgummadi@codeaurora.org>