MLK-18497-6: ASoC: fsl: dsp: Add Xtensa library handling API

This is based on RF-2016.4-linux package received from Cadence
and introduce the API for loading shared libraries into memory.

Based on this we create xf_load_lib/xf_load_unlib functions
which are used to tell DSP framework that codec libraries
are mapped in memory and it can start using them.

Reviewed-by: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
(cherry picked from commit e41836921c9f3674650318c9857584a461218c7c)
TODO: checkpatch warnings
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Srikanth Krishnakar <Srikanth_Krishnakar@mentor.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>