Add public ml models to benchmark targets

Change-Id: I1712e689127a44d59c650233eee71fc1f1e9a310

platforms/nexus/sim.mk

diff --git a/platforms/nexus/sim.mk b/platforms/nexus/sim.mk
index 371653c..c493c47 100644
--- a/platforms/nexus/sim.mk
+++ b/platforms/nexus/sim.mk
@@ -170,8 +170,10 @@
 
 ext_flash_model_benchmarks: | $(OUT_BENCHMARKS)
 	cd ml/ml-models && \
-	bazel build $$(bazel query //benchmarks/... | grep -E "benchmark_device_fpga$$")
-	find ml/ml-models/bazel-bin/benchmarks/ \
+	bazel query "//benchmarks/..." + "@ml_models_public//benchmarks/..." | \
+		grep -E "benchmark_device_fpga$$" | \
+		xargs bazel build
+	find ml/ml-models/bazel-bin/ \
 		-type f \
 		-name '*_extflash.tar' \
 		-exec cp -f {} "$(OUT_BENCHMARKS)/" \;