android: correct typo in build

Fixes: 63c58dfc653c499aab5b8d0ea07f1dc1af88c856
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
diff --git a/Android.common.mk b/Android.common.mk
index a75d4e7..30166a6 100644
--- a/Android.common.mk
+++ b/Android.common.mk
@@ -52,7 +52,7 @@
 	-DHAVE_FUNC_ATTRIBUTE_UNUSED \
 	-DHAVE_FUNC_ATTRIBUTE_FORMAT \
 	-DHAVE_FUNC_ATTRIBUTE_PACKED \
-	_DHAVE_FUNC_ATTRIBUTE_ALIAS \
+	-DHAVE_FUNC_ATTRIBUTE_ALIAS \
 	-DHAVE___BUILTIN_CTZ \
 	-DHAVE___BUILTIN_POPCOUNT \
 	-DHAVE___BUILTIN_POPCOUNTLL \