* [LITE][XPU] accomodate resnet_cbam

* [LITE][XPU] accomodate content-dnn

* fix pr comments test=develop

* fix pr comments test=develop

* fix pr comments test=develop test=xpu

* fix compilation error, test=develop test=xpu

* [X86] Fix the unit test of slice op
test=develop test=xpu
Co-authored-by: Nhong19860320 <9973393+hong19860320@users.noreply.github.com>

- 修复var_conv_2d级联使用中计算错误的bug
- x86的var_conv_2d中显示指定lod level为3

* optimize content-dnn cuda kernel

- add var_conv_2d cuda kernel

- add var_conv_2d cuda kernel unit test

- temporarily set to two input mode, remove input(ROW) and input(COLUMN)

* paddle lite cuda init
can run model with leaky_relu

* add the missing file.
test=develop