rumtime_loader: fix TLS for riscv64

Change-Id: I55593dea936af31135b8e9159f8b6a64270369c0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5157
Reviewed-by: X512 <danger_mail@list.ru>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

Update missing arch relocations

Change-Id: I2d48b810f5e3143377fa58e1de5801ebf0be82cd
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4409
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

headers/riscv64: Implement basic arch headers

Change-Id: I6bfbacb61eae84ffebc30c2565683348d684d88f
Reviewed-on: https://review.haiku-os.org/c/1063
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>