[fuchsia] Connect to devices using /loader-gpu-devices

/loader-gpu-devices is proxied by the vulkan loader to the loader
service, and includes all GPU devices required by ICDs. This helps
ensure applications don't accidentally block a service that they need to
operate.

Bug: fuchsia:75671
Change-Id: I33bdbff75389ce2b8225ea89c29869aec040a134
diff --git a/BUILD.gn b/BUILD.gn
index f372452..ac0b14a 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -179,8 +179,8 @@
     ]
 
     defines += [
-      "QEMU_PIPE_PATH=\"/dev/class/goldfish-pipe/000\"",
-      "GOLDFISH_ADDRESS_SPACE_DEVICE_NAME=\"/dev/class/goldfish-address-space/000\"",
+      "QEMU_PIPE_PATH=\"/loader-gpu-devices/class/goldfish-pipe/000\"",
+      "GOLDFISH_ADDRESS_SPACE_DEVICE_NAME=\"/loader-gpu-devices/class/goldfish-address-space/000\"",
     ]
   }
 }