kcsan: add __tsan_mem(cpy|move|set) aliases for clang >= 16

Summary:
After https://github.com/llvm/llvm-project/commit/b4257d3bf58c ("[tsan]
Replace mem intrinsics with calls to interceptors") intrinsic calls to
memcpy, memmove or memset will directly call sanitizer interceptors,
e.g. tsan_memcpy, tsan_memmove or __tsan_memset.

Building GENERIC-KCSAN with clang >= 16 would thus result in link errors
similar to:

ld: error: undefined symbol: __tsan_memcpy
>>> referenced by cam_compat.c:150 (/usr/src/sys/cam/cam_compat.c:150)
>>>               cam_compat.o:(cam_compat_handle_0x17)
>>> referenced by cam_compat.c:151 (/usr/src/sys/cam/cam_compat.c:151)
>>>               cam_compat.o:(cam_compat_handle_0x17)
>>> referenced by cam_compat.c:152 (/usr/src/sys/cam/cam_compat.c:152)
>>>               cam_compat.o:(cam_compat_handle_0x17)
>>> referenced 1692 more times

Similar to subr_msan.c, add aliases from the existing kcsan_* versions
of these functions to __tsan_* names.

Reviewed by: markj
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D39772

(cherry picked from commit 42162fb2fe30c0881e7e4d2143ddcfee3e1dd752)