msm: rndis_ipa: add support for power save

Add support for power save, specifically, add dependency between RNDIS_PROD
and APPS_CONS, which will wake up IPA when RNDIS_PROD is requested.

Change-Id: Iada712845d7cb2946d910308e50c95525272b525
Signed-off-by: Ravit Katzav <rkatzav@codeaurora.org>
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>