smart-amp-test: build as module on MTL

Test modular smart-amp-test on Meteorlake.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

src/samples/audio/Kconfig

@@ -4,6 +4,7 @@ menu "Audio component samples"
 
         config SAMPLE_SMART_AMP
 	        tristate "Smart amplifier test component"
+	        default m if METEORLAKE
 	        default y
 	        help
 	                Select for test smart amplifier component