dsp-tools: add license information

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/dsp-tools/dsp-tools.mk

@@ -7,6 +7,8 @@
 DSP_TOOLS_VERSION = 2.0
 DSP_TOOLS_SITE = http://gst-dsp.googlecode.com/files/
 DSP_TOOLS_DEPENDENCIES = tidsp-binaries
+DSP_TOOLS_LICENSE = LGPLv2.1
+DSP_TOOLS_LICENSE_FILES = LICENSE
 
 define DSP_TOOLS_BUILD_CMDS
 	$(TARGET_CONFIGURE_OPTS) $(MAKE) -C $(@D) -e