gstreamer1: fix xtensa configure

Disable unaligned access to avoid configure run test.

Fixes
http://autobuild.buildroot.net/results/1fb/1fb5bde77ea84f13fe8db7dedda5b8a29671b939/.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gstreamer1/gstreamer1/gstreamer1.mk

@@ -14,7 +14,7 @@ GSTREAMER1_LICENSE = LGPLv2+ LGPLv2.1+
 # Checking if unaligned memory access works correctly cannot be done when cross
 # compiling. For the following architectures there is no information available
 # in the configure script.
-ifeq ($(BR2_avr32),y)
+ifeq ($(BR2_avr32)$(BR2_xtensa),y)
 GSTREAMER1_CONF_ENV = as_cv_unaligned_access=no
 endif
 ifeq ($(BR2_aarch64),y)