sys/targets: fix Fuchsia build

Zircon directories have changed. Again.
diff --git a/sys/targets/targets.go b/sys/targets/targets.go
index f30a10c..a30c2e7 100644
--- a/sys/targets/targets.go
+++ b/sys/targets/targets.go
@@ -256,9 +256,10 @@
 				"-I", os.ExpandEnv("${SOURCEDIR}/zircon/system/ulib/ddk/include"),
 				"-I", os.ExpandEnv("${SOURCEDIR}/zircon/system/ulib/fdio/include"),
 				"-I", os.ExpandEnv("${SOURCEDIR}/zircon/system/ulib/fidl/include"),
-				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/public/fidl/fuchsia-device"),
-				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/public/fidl/fuchsia-hardware-nand"),
-				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/public/fidl/fuchsia-hardware-usb-peripheral"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/system/fidl/fuchsia-device"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/system/fidl/fuchsia-device-manager"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/system/fidl/fuchsia-hardware-nand"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/x64/fidling/gen/zircon/system/fidl/fuchsia-hardware-usb-peripheral"),
 				"-L", os.ExpandEnv("${SOURCEDIR}/out/x64/gen/zircon/public/lib/driver"),
 				"-L", os.ExpandEnv("${SOURCEDIR}/out/x64/gen/zircon/public/lib/fdio"),
 			},
@@ -278,9 +279,10 @@
 				"-I", os.ExpandEnv("${SOURCEDIR}/zircon/system/ulib/ddk/include"),
 				"-I", os.ExpandEnv("${SOURCEDIR}/zircon/system/ulib/fdio/include"),
 				"-I", os.ExpandEnv("${SOURCEDIR}/zircon/system/ulib/fidl/include"),
-				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/public/fidl/fuchsia-device"),
-				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/public/fidl/fuchsia-hardware-nand"),
-				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/public/fidl/fuchsia-hardware-usb-peripheral"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/system/fidl/fuchsia-device"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/system/fidl/fuchsia-device-manager"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/system/fidl/fuchsia-hardware-nand"),
+				"-I", os.ExpandEnv("${SOURCEDIR}/out/arm64/fidling/gen/zircon/system/fidl/fuchsia-hardware-usb-peripheral"),
 				"-L", os.ExpandEnv("${SOURCEDIR}/out/arm64/gen/zircon/public/lib/driver"),
 				"-L", os.ExpandEnv("${SOURCEDIR}/out/arm64/gen/zircon/public/lib/fdio"),
 			},