[Fix] method always using `cuda` #4041

	name: backend-snpe

	on:
	push:
	paths-ignore:
	- "demo/**"
	- "tools/**"

	pull_request:
	paths-ignore:
	- "demo/**"
	- "tools/**"
	- "docs/**"

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build_sdk_demo:
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout repository
	uses: actions/checkout@v3
	with:
	submodules: 'recursive'
	- name: update
	run: sudo apt update
	- name: Install dependencies
	run: \|
	sudo apt install wget libprotobuf-dev protobuf-compiler
	sudo apt update
	sudo apt install -y ffmpeg libsm6 libxext6 git ninja-build libglib2.0-0 libxrender-dev libc++1-9 libc++abi1-9
	sudo apt install libopencv-dev
	- name: Install snpe
	run: \|
	wget https://github.com/open-mmlab/mmdeploy/releases/download/v0.1.0/snpe-1.59.tar.gz
	tar xf snpe-1.59.tar.gz
	pushd snpe-1.59.0.3230
	pwd
	popd
	- name: Build SDK Demo with SNPE backend
	run: \|
	mkdir -p build && pushd build
	export SNPE_ROOT=/home/runner/work/mmdeploy/mmdeploy/snpe-1.59.0.3230
	export LD_LIBRARY_PATH=${SNPE_ROOT}/lib/x86_64-linux-clang:${LD_LIBRARY_PATH}
	export MMDEPLOY_SNPE_X86_CI=1
	cmake .. -DMMDEPLOY_BUILD_SDK=ON -DMMDEPLOY_TARGET_BACKENDS=snpe
	make -j2
	make install
	pushd install/example
	mkdir build && pushd build
	cmake ../cpp -DMMDeploy_DIR=${PWD}/../../lib/cmake/MMDeploy
	make -j2
	ls ./*
	popd
	popd
	popd

Provide feedback