emulator: use 4.4 kernel for x86 and x86_64

BUG: 72886167

Test: build aosp_x86 and aosp_x86_64
emulator boots complete

Change-Id: I388a775fe50ca60c938b097faf6bf4296d5c9a54
diff --git a/target/product/aosp_x86.mk b/target/product/aosp_x86.mk
index 811c330..96c9e33 100644
--- a/target/product/aosp_x86.mk
+++ b/target/product/aosp_x86.mk
@@ -24,7 +24,7 @@
 PRODUCT_COPY_FILES += \
     development/sys-img/advancedFeatures.ini:advancedFeatures.ini \
     device/generic/goldfish/data/etc/encryptionkey.img:encryptionkey.img \
-    prebuilts/qemu-kernel/x86_64/3.18/kernel-qemu2:kernel-ranchu-64
+    prebuilts/qemu-kernel/x86_64/4.4/kernel-qemu2:kernel-ranchu-64
 
 include $(SRC_TARGET_DIR)/product/full_x86.mk