boards: ptl: add Google RTC Audio Processing to PTL configuration

This patch introduces the Google RTC Audio Processing component into the
PTL configuration for the SOF firmware. The component is added as a
loadable module (`m`).

**Changes:**
- Added `CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m` to enable Google RTC
  Audio Processing.
- Included `CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y` for mock testing
  support.

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>

Author: tmleman

app/boards/intel_adsp_ace30_ptl.conf

@@ -33,6 +33,12 @@ CONFIG_PCM_CONVERTER_FORMAT_A_LAW=y
 CONFIG_PCM_CONVERTER_FORMAT_MU_LAW=y
 CONFIG_PCM_CONVERTER_FORMAT_FLOAT=y
 
+# SOF / audio modules / mocks
+# This mock is part of official sof-bin releases because the CI that
+# tests it can't use extra CONFIGs. See #9410, #8722 and #9386
+CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
+CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
+
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n
 CONFIG_PROBE=y