uhd_git.bbappend : Bump rev to beta2-rc1.
uhd_git.bbappend : Bump rev to beta2-rc1.

Fix install of fpga images also.

Signed-off-by: Philip Balister <3ba3974e96044dcde818e6310ed799abe10671d4@balister.org>

balister/meta-ettus,balister/meta-ettus