jack2: needs BR2_PACKAGE_ALSA_LIB_RAWMIDI

Fixes:

  http://autobuild.buildroot.org/results/f45/f4558837adeb89650beb9d74a3bd97616e412a8f/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/jack2/Config.in

@@ -6,6 +6,7 @@ config BR2_PACKAGE_JACK2
 	select BR2_PACKAGE_LIBSNDFILE
 	select BR2_PACKAGE_ALSA_LIB
 	select BR2_PACKAGE_ALSA_LIB_SEQ
+	select BR2_PACKAGE_ALSA_LIB_RAWMIDI
 	help
 	  JACK Audio Connection Kit (server and example clients).