Add error message for R828D Tuner

[JaredLThompson]

Currently, when the R828D Tuner is detected, the only message that gets sent to the log is Unknown Device. For example:

14:03:22.625 INFO i.g.d.s.t.TunerManager - USB Bus [1] Device [0BDA:2838] Unknown Device - Class 0 [25MB/128MB 19%]

There is already a well constructed exception message being constructed in TunerManager.java:

private TunerInitStatus initRTL2832Tuner(TunerClass tunerClass, Device device, DeviceDescriptor deviceDescriptor)
   {
  
           case RAFAELMICRO_R828D:
           case UNKNOWN:
           default:
               reason = "SDRTRunk doesn't currently support RTL2832 Dongle with [" + tunerType.toString() +
                   "] tuner for tuner class[" + tunerClass.toString() + "]";
               break;
       }

After adding the mlog(reason) before the break; command, the error message is more descriptive:

15:00:39.982 INFO  i.g.d.s.t.TunerManager - SDRTRunk doesn't currently support RTL2832 Dongle with [RAFAELMICRO_R828D] tuner for tuner class[USB Tuner:RTL2832_VARIOUS Vendor:RTL2832 Device:SDR Address:0BDA:2838]  [26MB/128MB 20%]
15:00:39.983 INFO  i.g.d.s.t.TunerManager - USB Bus [1] Device [0BDA:2838]  Unknown Device - Class 0  [26MB/128MB 20%]