Add Debian packaging information

This allows (among others) to build rtl-sdr nightly packages
for a variety of distributions as part of the network:osmocom:nightly
builds

debian/control

@@ -0,0 +1,54 @@
+Source: rtl-sdr
+Section: comm
+Priority: optional
+Maintainer: A. Maitland Bottoms <bottoms@debian.org>
+Build-Depends: cmake,
+               debhelper (>= 9.0.0~),
+               libusb-1.0-0-dev [linux-any],
+               libusb-dev [hurd-i386],
+               libusb2-dev [kfreebsd-any]
+Standards-Version: 4.1.4
+Homepage: http://sdr.osmocom.org/trac/wiki/rtl-sdr
+Vcs-Browser: https://salsa.debian.org/bottoms/pkg-rtl-sdr
+Vcs-Git: https://salsa.debian.org/bottoms/pkg-rtl-sdr.git
+
+Package: librtlsdr-dev
+Section: libdevel
+Architecture: any
+Pre-Depends: ${misc:Pre-Depends}
+Depends: librtlsdr0 (= ${binary:Version}),
+         libusb-1.0-0-dev [!kfreebsd-any],
+         libusb2-dev [kfreebsd-any],
+         ${misc:Depends}
+Description: Software defined radio receiver for Realtek RTL2832U (development)
+ rtl-sdr is a software defined radio (SDR) receiver software for certain
+ low-cost DVB-T/DAB(+) USB dongles based on the Realtek RTL2832U chip.
+ .
+ This package contains development files.
+
+Package: librtlsdr0
+Section: libs
+Architecture: any
+Pre-Depends: ${misc:Pre-Depends}
+Depends: ${misc:Depends}, ${shlibs:Depends}
+Multi-Arch: same
+Description: Software defined radio receiver for Realtek RTL2832U (library)
+ rtl-sdr is a software defined radio (SDR) receiver software for certain
+ low-cost DVB-T/DAB(+) USB dongles based on the Realtek RTL2832U chip.
+ .
+ This package contains the shared library.
+
+Package: rtl-sdr
+Architecture: any
+Depends: librtlsdr0 (= ${binary:Version}), ${misc:Depends}, ${shlibs:Depends}
+Description: Software defined radio receiver for Realtek RTL2832U (tools)
+ rtl-sdr is a software defined radio (SDR) receiver software for certain
+ low-cost DVB-T/DAB(+) USB dongles based on the Realtek RTL2832U chip.
+ .
+ This package contains a set of command line utilities:
+  * rtl_adsb: a simple ADS-B decoder for RTL2832 based DVB-T receivers
+  * rtl_eeprom: an EEPROM programming tool for RTL2832 based DVB-T receivers
+  * rtl_fm: a narrow band FM demodulator for RTL2832 based DVB-T receivers
+  * rtl_sdr: an I/Q recorder for RTL2832 based DVB-T receivers
+  * rtl_tcp: an I/Q spectrum server for RTL2832 based DVB-T receivers
+  * rtl_test: a benchmark tool for RTL2832 based DVB-T receivers