[GPU Service] Add gpuservice into PRODUCT_PACKAGES.

BUG: 118347356
Test: Build, flash, boot, `adb shell cmd gpu vkjson` to verify
Change-Id: Ib9a7d13817853da040c8c4059beca90418de4621
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index 7b70c86..85bd136 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -78,6 +78,7 @@
     heapprofd \
     heapprofd_client \
     gatekeeperd \
+    gpuservice \
     healthd \
     hid \
     hwservicemanager \