net: rndis_ipa: use IPA RM add dependency sync

In order to make sure IPA clocks are on when adding a dependency
to IPA RM dependency graph call to add_dependency_sync API which
is blocking API and it will return when the dependent resource
is granted.

Change-Id: I5cd770cd489a3aa3e32df21db7846e75aa4b7f3f
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Nadine Toledano <nadinet@codeaurora.org>
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>