Add "vendor." prefix to ro.camera.wrapper.hal3TrebleMinorVersion

Vendor-specific property should have "vendor." prefix.

Bug: 36513925
Test: succeeded building and tested with taimen
Change-Id: I80f17fb6b8017a761122ddd2f8863e63c72e5623
diff --git a/camera/provider/2.4/default/CameraProvider.cpp b/camera/provider/2.4/default/CameraProvider.cpp
index 8e37b26..6313939 100644
--- a/camera/provider/2.4/default/CameraProvider.cpp
+++ b/camera/provider/2.4/default/CameraProvider.cpp
@@ -298,7 +298,8 @@
         return true;
     }
 
-    mPreferredHal3MinorVersion = property_get_int32("ro.camera.wrapper.hal3TrebleMinorVersion", 3);
+    mPreferredHal3MinorVersion =
+        property_get_int32("ro.vendor.camera.wrapper.hal3TrebleMinorVersion", 3);
     ALOGV("Preferred HAL 3 minor version is %d", mPreferredHal3MinorVersion);
     switch(mPreferredHal3MinorVersion) {
         case 2: