Merge branch 'pool' of https://github.com/chenjiaoAngel/Paddle-Lite into pool

pull code

* add conv+conv(1x1s1p0) fusion

* fix build and run error

* fix formmat. test=develop

* enable opencl kernel tune by default. test=develop

* read-only modification of cppDesc, test=develop

* update io.cc, test=develop

* fix the code style, test=develop

* fix typo

* [LITE][XPU] accomodate crmm(variant 20200608)

* refine lite/tests/api/test_mmdnn_lite_xpu.cc

* more comments, test=develop test=xpu

* bugfix in crmm pattern match

* pr comments, test=develop test=xpu

* add XPU_CALL and retval check, test=develop test=xpu

* update sequence_conv profile

* delete extra file, test=develop

* add opencl valid api for device

* update sequence_pool and sequence_conv profiler, test=develop

* fix compute error, test=develop

* delete warning and extra info, test=develop

* update desc interfaces, test=develop

* update desc interfaces, test=develop

* update compatible_pb.cc, test=develop

* fix build errors, test=develop

* remove the fstream to shrink the size of library, test=develop

add act grad ops

* [LITE][BM] modify interpolate if,test=develop

* [LITE][BM] add include math.h, test=develop

remove conv redundant's for opencl kernel.

* [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>

* [NPU] apply npu cache offline model to other devices, test=develop

* [NPU] address review comments, test=develop

pull code

* [NPU] enhance cache offline model, test=develop

add op lrn  norm  gather

* align opdesc interfaces, test=develop

* align opdesc interfaces, test=develop

add mlu kernels  argmax, flatten, slice, transpose

add mlu kernel dropout split squeeze reshape