Provide RTL-SDR 0.5.3 (RTL2832U chips, AM/FM radio support)

Provide RTL-SDR 0.5.3 (RTL2832U chips, AM/FM radio support)

RTL2832U-based USB dongles provide a convenient hardware
interface for AM/FM radio reception, which is actively
required by AGL 1.0 specification (AGL:4.2.1.1).

This is also required by the AM/FM radio QML plugin
(https://github.com/iotbzh/qml_radio_plugin).

(this is an original recipe, because it does not fit
general-purpose repositories such as meta-openembedded,
but the constructor does not have an official Yocto
repository yet)

Change-Id: I1a0298e7a110181f86f9ec93dcea1567bb2c0379
Signed-off-by: Manuel Bachmann <mbc@iot.bzh>