Merge branch 'wip/burx_support'

* wip/burx_support:
  -Updated to allow BURX support to be built into standard txrx.bin
  Once and for all, here is the properly updated Makefile.am for the apps
  Updated db_bitshark_rx.c to the proper version that includes the
  Change default bandwidth to 25 MHz to match maximum USRP2 bandwidth
  Update incorrectly checked in Makefile.am
  usrp: Cleanup for merge of bitshark daughterboard code
  Including bitshark_rx.h header file for USRP2 build
  Fixed issue with with wrong Makefile.am files being copied
  Add support for the Bitshark USRP RX (BURX) daughterboard for the USRP2.
  Add support for the Bitshark USRP RX (BURX) daughterboard for the USRP1.