google_audio_processing: Clean up MOCK kconfig

The mock facility for AEC got folded into CONFIG_STUBS which is a more
general tunable.  But it was done with a kconfig "select" and not a
default, which meant that it was no longer possible to disable the
mock when AEC was enabled without changing COMP_STUBS globally, which
hurts debugging.  Put the handling in a default on the variable
instead, now it can be overridden by later stages of kconfig (like the
board conf file or the command line of xtensa-build-zephyr.py).

Also enable MOCK explicitly in two spots (library build_all_ipc3)
where AEC was being built out of the SOF upstream code alone and was
relying on MOCK=y being automatically selected.  That doesn't build
anymore, the default is to build the real feature.

Signed-off-by: Andy Ross <[email protected]>

app/stub_build_all_ipc3.conf

@@ -1,5 +1,6 @@
 CONFIG_COMP_STUBS=y
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=y
+CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
 CONFIG_COMP_TONE=n
 CONFIG_COMP_CROSSOVER=y
 CONFIG_COMP_DRC=y

src/arch/host/configs/library_defconfig

@@ -4,6 +4,7 @@ CONFIG_COMP_DCBLOCK=y
 CONFIG_COMP_DRC=y
 CONFIG_COMP_FIR=y
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=y
+CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
 CONFIG_COMP_IIR=y
 CONFIG_COMP_MFCC=y
 CONFIG_COMP_MODULE_ADAPTER=y

src/audio/google/Kconfig

@@ -15,7 +15,6 @@ config COMP_GOOGLE_HOTWORD_DETECT
 config COMP_GOOGLE_RTC_AUDIO_PROCESSING
 	bool "Google Real Time Communication Audio processing"
 	select COMP_BLOB
-	select GOOGLE_RTC_AUDIO_PROCESSING_MOCK if COMP_STUBS
 	default n
 	help
 	  Select for Google real-time communication audio processing. It
@@ -75,7 +74,7 @@ config COMP_GOOGLE_RTC_AUDIO_PROCESSING_MIC_HEADROOM_LINEAR
 
 config GOOGLE_RTC_AUDIO_PROCESSING_MOCK
 	bool "Google Real Time Communication Audio processing mock"
-	default n
+	default y if COMP_STUBS
 	depends on COMP_GOOGLE_RTC_AUDIO_PROCESSING
 	help
 	  Mock Google real-time communication audio processing.