profiles/audio: Add an ASHA plugin

This exposes the ASHA profile implementation in the previous commit as
an audio profile.

The implementation registers a remote endpoint using a subset of the
MediaEndpoint1 interface, without any mechanism for setting/selecting a
configuration, as this is all static in the spec for now. Also exposed
on connection is a MediaTransport1 object, which can be used to obtain
an fd to stream to the device.

Resolves: #481

Author: ford-prefect

Makefile.plugins

@@ -147,3 +147,8 @@ if CSIP
 builtin_modules += csip
 builtin_sources += profiles/audio/csip.c
 endif
+
+if ASHA
+builtin_modules += asha
+builtin_sources += profiles/audio/asha.h profiles/audio/asha.c
+endif

configure.ac

@@ -216,6 +216,10 @@ AC_ARG_ENABLE(csip, AS_HELP_STRING([--disable-csip],
 		[disable CSIP profile]), [enable_csip=${enableval}])
 AM_CONDITIONAL(CSIP, test "${enable_csip}" != "no")
 
+AC_ARG_ENABLE(asha, AS_HELP_STRING([--disable-asha],
+		[disable ASHA support]), [enable_asha=${enableval}])
+AM_CONDITIONAL(ASHA, test "${enable_asha}" != "no")
+
 AC_ARG_ENABLE(tools, AS_HELP_STRING([--disable-tools],
 		[disable Bluetooth tools]), [enable_tools=${enableval}])
 AM_CONDITIONAL(TOOLS, test "${enable_tools}" != "no")