smart_amp: add smart amplifier test component

Smart amplifier should be used in following topology:

                 +------------------------------------------+
     +------+    | +---+  +-------------+  +---+  +-------+ |
     | Host |----->|Buf|->|  Smart Amp  |->|Buf|->|SSP Dai|-----------+
     +------+    | +---+  +-------------+  +---+  +-------+ |         |
                 +-----------------^------------------------+         |
                                   |                                  |
                                 +---+                                |
				 |Buf|                                |
                                 +---+                                |
                                   ^                                  |
                 +-----------------|--------------------------+       |
     +------+    | +---+  +--------|------+  +---+  +-------+ |       |
     | Host |<-----|Buf|<-|     Demux     |<-|Buf|<-|SSP Dai|<--------+
     +------+    | +---+  +---------------+  +---+  +-------+ |
                 +--------------------------------------------+

Smart amplifier test component does not implement any specific processing
algorithm at the moment. I can pass chosen channels from source (buffer
between Host and Smart amplifier) or feedback (buffer between Smart
amplifier and Demux component) buffers. Those channels are selected by
sending proper config to this component. Smart amplifier can be
configured via SOF_SMART_AMP_CONFIG or SOF_SMART_AMP_MODEL data
(similarly as it happens in detector case).

Signed-off-by: Bartosz Kokoszko <bartoszx.kokoszko@linux.intel.com>

Author: bkokoszx

src/audio/CMakeLists.txt

@@ -60,6 +60,11 @@ if(NOT CONFIG_LIBRARY)
 			detect_test.c
 		)
 	endif()
+	if(CONFIG_COMP_TEST_SMART_AMP)
+		add_local_sources(sof
+			smart_amp_test.c
+		)
+	endif()
 	add_subdirectory(pcm_converter)
 	if(CONFIG_COMP_ASRC)
 		add_subdirectory(asrc)

src/audio/Kconfig

@@ -122,6 +122,13 @@ config COMP_DCBLOCK
 	  Select for DC Blocking Filter component. This component filters out
 	  the DC offset which often originates from a microphone's output.
 
+config COMP_TEST_SMART_AMP
+	depends on CAVS && !CAVS_VERSION_1_5
+	bool "Smart amplifier test component"
+	default y
+	help
+	  Select for test smart amplifier component
+
 config COMP_TEST_KEYPHRASE
 	bool "KEYPHRASE_TEST component"
 	default y