disas/riscv: Decode all of the pmpcfg and pmpaddr CSRs

disas/riscv: Decode all of the pmpcfg and pmpaddr CSRs

Previously we only listed a single pmpcfg CSR and the first 16 pmpaddr
CSRs. This patch fixes this to list all 16 pmpcfg and all 64 pmpaddr
CSRs are part of the disassembly.

Reported-by: Eric DeVolder <eric_devolder@yahoo.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Fixes: ea10325917 ("RISC-V Disassembler")
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Cc: qemu-stable <qemu-stable@nongnu.org>
Message-ID: <20240514051615.330979-1-alistair.francis@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 915758c537b5fe09575291f4acd87e2d377a93de)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>