4a-hal-generic: bump to latest revision

4a-hal-generic: bump to latest revision

This includes the following changes:

* 01d55ed Adds support for bluetooth audio through bluez-alsa
* dbe555b Remove old comments not true anymore
* ef3b6e3 Update version of app-controller submodule.
* f278417 Add halmap controls events generation for all hal
* ec6351b Add streams events generation for each hal
* a480485 Rework calls to mixer streams
* ecb0392 Add 'halmap' controls in hal 'info' verb response
* f741fc8 Add setting values of a ALSA control using a +/-
* cdbaaf3 Send back control previous and current values
* 3aa9dec Send back control current values if no request json
* 07c240d Add a function to get values of an alsa control
* 03776c5 Improve ALSA controls volume values conversion
* a34509b Update syntax of a request of an halmap verb
* 86a1b87 Typo fix in halmap call response
* cb1dfa9 Correct halmap calls request json syntax
* be74611 Move hal configuration files into 4a-hal-configs repository
* 265d86d Add master branch into .gitreview file
*   4b299e6 Merge "Add autobuild to top tree"
|\
| * 55561d8 Add autobuild to top tree
* | 2a0c79f Move hal controls actions at the end of hal init
|/
* 7db42de Add tests for 4a-hal-generic
* d3c0253 Change .gitmodules following submodule migration
* 3c2fbe2 hal-bt : Each plugin has its own data structure
* 226aa0f Use new ctl functions to set/get ctl external data
* 71a57c4 Update version of app-controller submodule.
* 32b4b5c Force each hal to have its own ctl section data
* be188c3 Use ctl defines to call afb functions
* cabdc82 Add .gitreview to 4a-hal-generic
* 50be438 Migrate app-templates to CMake module

Change-Id: I94fca26ecfbad784500230b3183f1e2e187c62e9
Signed-off-by: Stephane Desneux <stephane.desneux@iot.bzh>