hal: reroute active capture usecases which share same backend

During device switch, all active capture usecases need to be
switched to new sound device if they all share same backend.
This is not happening because of an improper check of capture
usecase's device against output backend devices. Correct the
check to compare against input backend devices.

Change-Id: Iaf43c30b091f78c2ffb8b2740f241f2edfbe5a08
CRs-fixed: 873528
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 2247933..fa9f4bb 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -45,6 +45,15 @@
     (AUDIO_DEVICE_OUT_EARPIECE | AUDIO_DEVICE_OUT_SPEAKER | \
      AUDIO_DEVICE_OUT_WIRED_HEADSET | AUDIO_DEVICE_OUT_WIRED_HEADPHONE)
 
+/*
+ * Below are the input devices for which back end is same, SLIMBUS_0_TX.
+ * All these devices are handled by the internal HW codec. We can
+ * enable any one of these devices at any time
+ */
+#define AUDIO_DEVICE_IN_ALL_CODEC_BACKEND \
+    (AUDIO_DEVICE_IN_BUILTIN_MIC | AUDIO_DEVICE_IN_BACK_MIC | \
+     AUDIO_DEVICE_IN_WIRED_HEADSET | AUDIO_DEVICE_IN_VOICE_CALL) & ~AUDIO_DEVICE_BIT_IN
+
 /* Sound devices specific to the platform
  * The DEVICE_OUT_* and DEVICE_IN_* should be mapped to these sound
  * devices to enable corresponding mixer paths