package/alsa-lib: Switch ALSA_LIB_SITE to official site

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/alsa-lib/alsa-lib.mk

@@ -6,7 +6,7 @@
 
 ALSA_LIB_VERSION = 1.0.28
 ALSA_LIB_SOURCE = alsa-lib-$(ALSA_LIB_VERSION).tar.bz2
-ALSA_LIB_SITE = http://alsa.cybermirror.org/lib
+ALSA_LIB_SITE = ftp://ftp.alsa-project.org/pub/lib
 ALSA_LIB_LICENSE = LGPLv2.1+
 ALSA_LIB_LICENSE_FILES = COPYING
 ALSA_LIB_INSTALL_STAGING = YES