Fix build warnings with W=1 that started appearing after
commit a934a57a42f6 ("scripts/misc-check: check missing #include
<linux/export.h> when W=1").

While at it, also sort the include lists alphabetically.  (Keep
asm/irqflags.h last, as otherwise it doesn't build on alpha.)

This handles all of lib/crypto/, but not arch/*/lib/crypto/.  The
exports in arch/*/lib/crypto/ will go away when the code is properly
integrated into lib/crypto/ as planned.

Link: https://lore.kernel.org/r/20250613184814.50173-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.

auto-generated by the following:

for i in `git grep -l -w asm/unaligned.h`; do
	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h

With ARCH=arm, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libsha256.o

Add the missing invocation of the MODULE_DESCRIPTION() macro to all
files which have a MODULE_LICENSE().

This includes sha1.c and utils.c which, although they did not produce
a warning with the arm allmodconfig configuration, may cause this
warning with other configurations.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

The utilities have historically resided in algapi.h as they were
first used internally before being exported.  Move them into a
new header file so external users don't see internal API details.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

CRYPTO_LIB_CHACHA depends on CRYPTO for __crypto_xor, defined in
crypto/algapi.c.  This is a layering violation because the dependencies
should only go in the other direction (crypto/ => lib/crypto/).  Also
the correct dependency would be CRYPTO_ALGAPI, not CRYPTO.  Fix this by
moving __crypto_xor into the utils module in lib/crypto/.

Note that CRYPTO_LIB_CHACHA_GENERIC selected XOR_BLOCKS, which is
unrelated and unnecessary.  It was perhaps thought that XOR_BLOCKS was
needed for __crypto_xor, but that's not the case.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>