wireguard: bump to 0.0.20180925

wireguard: bump to 0.0.20180925

33523a5 version: bump snapshot
0759480 curve25519-hacl64: reduce stack usage under KASAN
b9ab0fc chacha20: add bounds checking to selftests
2e99d19 chacha20-mips32r2: reduce stack and branches in loop, refactor jumptable handling
d6ac367 qemu: bump musl
28d8b7e crypto: make constant naming scheme consistent
56c4ea9 hchacha20: keep in native endian in words
0c3c0bc chacha20-arm: remove unused preambles
3dcd246 chacha20-arm: updated scalar code from Andy
6b9d5ca poly1305-mips64: remove useless preprocessor error
3ff3990 crypto-arm: rework KERNEL_MODE_NEON handling again
dd2f91e crypto: flatten out makefile
67a3cfb curve25519-fiat32: work around m68k compiler stack frame bug
9aa2943 allowedips: work around kasan stack frame bug in selftest
317b318 chacha20-arm: use new scalar implementation
b715e3b crypto-arm: rework KERNEL_MODE_NEON handling
77b07d9 global: reduce stack frame size
ddc2bd6 chacha20: add chunked selftest and test sliding alignments and hchacha20
2eead02 chacha20-mips32r2: reduce jumptable entry size and stack usage
a0ac620 chacha20-mips32r2: use simpler calling convention
09247c0 chacha20-arm: go with Ard's version to optimize for Cortex-A7
a329e0a chacha20-mips32r2: remove reorder directives
3b22533 chacha20-mips32r2: fix typo to allow reorder again
d4ac6bb poly1305-mips32r2: remove all reorder directives
197a30c global: put SPDX identifier on its own line
305806d ratelimiter: disable selftest with KASAN
4e06236 crypto: do not waste space on selftest items
5e0fd08 netlink: reverse my christmas trees
a61ea8b crypto: explicitly dual license
b161aff poly1305: account for simd being toggled off midway
470a0c5 allowedips: change from BUG_ON to WARN_ON
aa9e090 chacha20: prefer crypto_xor_cpy to avoid memmove
1b0adf5 poly1305: no need to trick gcc 8.1
a849803 blake2s: simplify final function
073f3d1 poly1305: better module description

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>