MLK-17309-3: ASoC: fsl_hifi: get free memory from hifi framework

MLK-17309-3: ASoC: fsl_hifi: get free memory from hifi framework

In order to manage the memory simply, all the memory which is
shared between hifi driver and hifi framework are managed by
hifi framework.

So when the driver wants to get free memory, it can send
"ICM_PI_LIB_MEM_ALLOC" command to hifi framework, then hifi
framework will return the address of available memory to
driver. When the driver wants to release the memory, it can
send "ICM_PI_LIB_MEM_FREE" command to hifi framework, the hifi
framework will mark this memory available.

Signed-off-by: Weiguang Kong <weiguang.kong@nxp.com>