hal: update voice PCM device IDs for msm8994

New machine driver has been added for msm8994. Update PCM device IDs
for voice use cases accordingly. This change is needed to support
voice use cases on msm8994.

Change-Id: Iba5f9423fe99668ccfe3a692c2a3148977d4dfc2
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index ba89c1b..ff2ae9a 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -243,6 +243,12 @@
 #define VOLTE_CALL_PCM_DEVICE 15
 #define QCHAT_CALL_PCM_DEVICE 14
 #define VOWLAN_CALL_PCM_DEVICE -1
+#elif PLATFORM_MSM8994
+#define VOICE_CALL_PCM_DEVICE 2
+#define VOICE2_CALL_PCM_DEVICE 22
+#define VOLTE_CALL_PCM_DEVICE 14
+#define QCHAT_CALL_PCM_DEVICE 20
+#define VOWLAN_CALL_PCM_DEVICE 36
 #else
 #define VOICE_CALL_PCM_DEVICE 2
 #define VOICE2_CALL_PCM_DEVICE 22