Add vendor-specific message types for FM.

This change is for devices based on msm8998 hardware only. This
only impacts standalone VR devices based o that are using oc-dev.

Some message types used by QCOM are missing from
system/bt/hci/include/bt_vendor_lib.h.

Bug: 38055350
Test: BT compiles. Proprietary bits that depend on the
      definitions added by this commit now compile.
Change-Id: Ibe524528df6d86b7c0eb1f7df8d7074fcbcfbf9b
diff --git a/libbt-vendor/include/bt_vendor_qcom.h b/libbt-vendor/include/bt_vendor_qcom.h
index 12ba51e..b3eaa8c 100644
--- a/libbt-vendor/include/bt_vendor_qcom.h
+++ b/libbt-vendor/include/bt_vendor_qcom.h
@@ -44,6 +44,12 @@
 }bt_soc_type;
 
 typedef enum {
+    FM_VND_OP_POWER_CTRL = (unsigned int)BT_VND_OP_A2DP_OFFLOAD_STOP + 1,
+    BT_VND_OP_FM_USERIAL_OPEN,
+    BT_VND_OP_FM_USERIAL_CLOSE,
+}bt_fm_serial;
+
+typedef enum {
     BT_VND_OP_ANT_USERIAL_OPEN = 254,
     BT_VND_OP_ANT_USERIAL_CLOSE
 }ant_serial;