bt: Build with -Werror

Change-Id: If1ccdf5995ec4dc416b5db12777094a34f014a14

Author: mikeNG

msm8996/libbt-vendor/Android.bp

@@ -30,7 +30,7 @@ cc_library_shared {
 
     cflags: [
         "-DBT_SOC_TYPE_ROME",
-        "-Wno-error",
+        "-Werror",
     ],
 
     srcs: [

msm8998/libbt-vendor/Android.bp

@@ -30,11 +30,6 @@ cc_library_shared {
 
     cflags: [
         "-Werror",
-        "-Wno-error=user-defined-warnings",
-        "-Wno-incompatible-pointer-types-discards-qualifiers",
-        "-Wno-unused-function",
-        "-Wno-unused-label",
-        "-Wno-unused-variable",
     ],
 
     srcs: [

msm8998/libbt-vendor/src/bt_vendor_qcom.c

@@ -480,7 +480,7 @@ static int bt_powerup(int en )
 
     if (q.soc_type >= BT_SOC_CHEROKEE && q.soc_type < BT_SOC_RESERVED) {
        ALOGI("open bt power devnode,send ioctl power op  :%d ",en);
-       fd_btpower = open(BT_PWR_CNTRL_DEVICE, O_RDWR, O_NONBLOCK);
+       fd_btpower = open(BT_PWR_CNTRL_DEVICE, O_RDWR | O_NONBLOCK);
        if (fd_btpower < 0) {
            ALOGE("\nfailed to open bt device error = (%s)\n",strerror(errno));
 #ifdef WIFI_BT_STATUS_SYNC