audioeffect: fix segfault on device effect configuration

Bug: 268441977
Test: add a default device effect, launch a use case involging it

When calling configure for a device effect, mMaxDisableWaitCnt is
computed from framecount function call as divider. It is initialized
to 0 for DeviceEffectProxy, thus leading to segfault

Change-Id: Id5c62c3100e17ea3e142ad3ef3e8838a7bc3d71c
Signed-off-by: François Gaffie <francois.gaffie@renault.com>