[AUDIO] Intel MID I2S: Set the SSP in SLAVE MODE when closing the device

[AUDIO] Intel MID I2S: Set the SSP in SLAVE MODE when closing the device

BZ: 38025

IN BT SCO Normal Mode the SSP1 is used in MASTER MODE. The SSP1 should be
configured in SLAVE MODE when closed to avoid any impact on Modem-MSIC and
Modem-BT connection and avoid audio glitches.

Change-Id: I6628e82623c6d28e1aa60fa376e305de7c481a2c
Signed-off-by: Selma Bensaid <selma.bensaid@intel.com>
Reviewed-on: http://android.intel.com:8080/51394
Reviewed-by: De Chivre, Renaud <renaud.de.chivre@intel.com>
Reviewed-by: Le Gall, Louis <louis.le.gall@intel.com>
Reviewed-by: Di Folco, NeilX <neilx.di.folco@intel.com>
Tested-by: Mendi, EduardoX <eduardox.mendi@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>