update linux kernel to 4.19.56-linux4sam-6.1, which support Kernel crypto u...

guowenxue

2019-08-26 912f9e0ee8303384e42bbe9626cf5a2684143696

 tools/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabi.tar.xz

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