gta4xl-common: Include samsung_slsi-linaro soong namespaces

Change-Id: I90b61dfa6647d290d13e8e30923f0eacee8cd3b5
diff --git a/common.mk b/common.mk
index fa2ef4c..83d2e61 100644
--- a/common.mk
+++ b/common.mk
@@ -24,6 +24,9 @@
 # Enable project quotas and casefolding for emulated storage without sdcardfs
 $(call inherit-product, $(SRC_TARGET_DIR)/product/emulated_storage.mk)
 
+# Soong namespaces
+$(call inherit-product, hardware/samsung_slsi-linaro/config/config.mk)
+
 # Audio
 PRODUCT_PACKAGES += \
     android.hardware.audio.effect@7.0-impl:32 \