[DNM] load volume with llext

Build 'volume' as a module to test the new API on an extension with
detached sections.

Signed-off-by: Luca Burelli <l.burelli@arduino.cc>

app/boards/intel_adsp_ace20_lnl.conf

@@ -13,6 +13,7 @@ CONFIG_COMP_KPB=y
 CONFIG_COMP_TESTER=m
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
 CONFIG_COMP_UP_DOWN_MIXER=y
+CONFIG_COMP_VOLUME=m
 CONFIG_COMP_VOLUME_WINDOWS_FADE=y
 CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_PCM_CONVERTER_FORMAT_S16_C16_AND_S16_C32=y