RISC-V has implemented pte_pgprot() and selects GENERIC_IOREMAP,
which provides a generic ioremap_prot() implementation. Enable
HAVE_IOREMAP_PROT to activate generic_access_phys() support, which
is useful for debugging (e.g., accessing /dev/mem via gdb).
Also update the architecture support documentation accordingly.
Signed-off-by: Yufeng Wang <wangyufeng@kylinos.cn>
Link: https://patch.msgid.link/20260306112734.108186-1-r4o5m6e8o@163.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>