Audio: RTNR: Convert to module API

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

Author: singalsu

src/arch/host/configs/library_defconfig

@@ -8,9 +8,11 @@ CONFIG_COMP_MFCC=y
 CONFIG_COMP_MODULE_ADAPTER=y
 CONFIG_COMP_MULTIBAND_DRC=y
 CONFIG_COMP_MUX=y
+#CONFIG_COMP_RTNR=y
 CONFIG_COMP_SEL=y
 CONFIG_COMP_SRC=y
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
+#CONFIG_COMP_STUBS=y
 CONFIG_COMP_TDFB=y
 CONFIG_COMP_VOLUME=y
 CONFIG_COMP_VOLUME_LINEAR_RAMP=y