rtl-sdr with bias T

[Cinaed Simson]

Hi - there appears to be problem with rtl-sdr with bias T and the
RTL2832U OEM Rafael Micro R820T tuner.

I get PLL errors when I try to calibrate it using kal - or when I use
rtl_test.

Using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Exact sample rate is: 270833.002142 Hz
[R82XX] PLL not locked!
Setting gain: 33.8 dB

And I get the same error PLL when I run rtl_test.

If I back out of the latest git version to v0.5.3 it works correctly - I
can calibrate the dongle using kal and run rtl_test without any PLL errors.

This is a known problem?

-- Cinaed