package/libsamplerate: use --{dis, en}able-alsa

Commit 5b679d7806767206f2c7bd7ff69b412bebb504f8 forgot to set
--{dis,en}able-alsa

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 5ef445e84f8ad45e08c603f1334e8e9550f8e3e0)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libsamplerate/libsamplerate.mk

@@ -15,6 +15,9 @@ LIBSAMPLERATE_CPE_ID_VENDOR = libsamplerate_project
 
 ifeq ($(BR2_PACKAGE_ALSA_LIB),y)
 LIBSAMPLERATE_DEPENDENCIES += alsa-lib
+LIBSAMPLERATE_CONF_OPTS += --enable-alsa
+else
+LIBSAMPLERATE_CONF_OPTS += --disable-alsa
 endif
 
 ifeq ($(BR2_PACKAGE_LIBSNDFILE),y)