alsa-lib: add license information for aserver

Reported-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/alsa-lib/alsa-lib.mk

@@ -7,8 +7,8 @@
 ALSA_LIB_VERSION = 1.1.1
 ALSA_LIB_SOURCE = alsa-lib-$(ALSA_LIB_VERSION).tar.bz2
 ALSA_LIB_SITE = ftp://ftp.alsa-project.org/pub/lib
-ALSA_LIB_LICENSE = LGPLv2.1+
-ALSA_LIB_LICENSE_FILES = COPYING
+ALSA_LIB_LICENSE = LGPLv2.1+ (library), GPLv2+ (aserver)
+ALSA_LIB_LICENSE_FILES = COPYING aserver/COPYING
 ALSA_LIB_INSTALL_STAGING = YES
 ALSA_LIB_CFLAGS = $(TARGET_CFLAGS)
 ALSA_LIB_AUTORECONF = YES