[4A] Bump 4a-hal-generic and 4a-softmixer (inc. MinnowMax fix)

[4A] Bump 4a-hal-generic and 4a-softmixer (inc. MinnowMax fix)

Alsa devices mapping on Minnowboard Max has changed since the
initial HAL definition and multiple subdevices are now seen on HDMI card.
These changes must be reflected in 4a-softmixer and HAL definition.

Other fixes for upcoming BT support are also included.

New revision for 4a-softmixer includes:
* 9c0aa9f fixed crash upon misconfiguration of capture/playback devices
* 168e928 dmix: used device when in name of slave
* 80deafb Added bluez sound playback support

New revision for 4a-hal-generic includes:
* 9276521 minnow board: fixed the pcm device in json config
* be379b3 Use latest version of app-controller submodule.
* f5113a0 Add bluetooth hal plugin
* 33bc780 Remove unnecessary 'struct' before json_object
* 9ab8302 Correct an error when unpacking alsacore response
* 1ef27b6 Correct errors in hal-utilities-data prototypes

Bug-AGL: SPEC-1692, SPEC-1679

Change-Id: Ie99d6cd7dd13fd27b095e2de7c7160dc92890c98
Signed-off-by: Stephane Desneux <stephane.desneux@iot.bzh>