hal: Squashed collection of fixes

 * Remove unnecessary ifdefs for PCM offload
 * Remove unnecessary property for 24-bit support (use audio policy)
 * Clean up warnings

 * Also includes these patches from Google:

audio: fix set_parameters return value.

xxx_set_parameters functions were returning the status
returned by str_parms_create_str() which is incorrect.
These functions should return 0 when no error occurs.

Change-Id: Ib4a7ac427e49f5500c99902f86d2d69d5843eda0

Scan and verify audio device parameters on open

Scanning is default disabled at this time.
Verbose logs will display device params found.

Change-Id: Id188d096ec68d2058c66ae3a51fe57d9645d03ef
Signed-off-by: Andy Hung <hunga@google.com>

audio: deprecate audio_stream_frame_size()

Bug: 15000850.
Change-Id: I1bbe614c241befa24513a2b583594680e32fd954
diff --git a/hal/audio_hw.h b/hal/audio_hw.h
index 622f9ac..1929630 100644
--- a/hal/audio_hw.h
+++ b/hal/audio_hw.h
@@ -269,6 +269,14 @@
     int (*offload_effects_stop_output)(audio_io_handle_t, int);
 
     struct sound_card_status snd_card_status;
+
+    /* The pcm_params use_case_table is loaded by adev_verify_devices() upon
+     * calling adev_open().
+     *
+     * If an entry is not NULL, it can be used to determine if extended precision
+     * or other capabilities are present for the device corresponding to that usecase.
+     */
+    struct pcm_params *use_case_table[AUDIO_USECASE_MAX];
 };
 
 int select_devices(struct audio_device *adev,