[Patch-gnuradio] Add missing interfaces for gr_agc2

[Alexandru Csete]

Greetings,

The gr_agc2 block has public methods to set and get the AGC levels and
rates; however, only a few of these interfaces are exported to Python
and none of them are available in GRC.

The attached patch adds the missing public methods to gri_agc2_cc.i
and gri_agc2_ff.i and defines the corresponding callbacks in the
gr_agc2_xx.xml GRC block.

Also attached a simple GRC file to test these callbacks.

Cheers
Alex

gr_agc2_interface.patch
Description: Binary data

agc2_test.grc
Description: Binary data