Revert "LZ4: compression/decompression signedness mismatch (v2)"

This reverts commit 4111d9c240a8cf566a481e5a3a4ecd6fb4c44ea0.
Revert "lib/lz4/lz4_compress: fix macro usage error"

This reverts commit 41bf81dcd079e4b8f5fa873a49e52a046d428689.
Revert "lib: Add lz4 compressor module"

This reverts commit 1278590c7b741f199ac5e037dd25b856af4d2a08.
Revert "crypto: Add lz4 Cryptographic API"

This reverts commit ce75d8c41c88060a82b1991c95d2185b50718e1f.
Revert "lib: Add support for LZ4-compressed kernel"

This reverts commit 4b55d5010bf602e9b6b964b021252efead89d7f1.
Revert "decompressor: Add LZ4 decompressor module"

This reverts commit e0f3779f8aec01031147ccf3f743e344f0a9847f.
Add New LZ4 Zram module