Updating config.guess is needed for riscv64 builds

Issue description

cryptsetup FTBFS on riscv64 because of the outdated config.guess, and configure would complain "cannot guess build type".

Steps for reproducing the issue

Build this package on riscv64 platform (using corresponding PKGBUILD file from Arch Linux).

Additional info

extra-riscv64-build is used to build this package on Arch Linux RISC-V. The compilation failed because configure cannot guess build type.

Debug log

checking whether make supports nested variables... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets ... yes
checking build system type... ./config.guess: unable to guess system type

This script, last modified 2014-03-23, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from

  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
and
  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD

If the version you run (./config.guess) is already up to date, please
send the following data and any information you think might be
pertinent to <config-patches@gnu.org> in order to provide the needed
information to handle your system.

config.guess timestamp = 2014-03-23

uname -m = riscv64
uname -r = 5.18.11-arch1-1
uname -s = Linux
uname -v = #1 SMP PREEMPT_DYNAMIC Tue, 12 Jul 2022 15:40:51 +0000

/usr/bin/uname -p = unknown
/bin/uname -X     = 

hostinfo               = 
/bin/universe          = 
/usr/bin/arch -k       = 
/bin/arch              = 
/usr/bin/oslevel       = 
/usr/convex/getsysinfo = 

UNAME_MACHINE = riscv64
UNAME_RELEASE = 5.18.11-arch1-1
UNAME_SYSTEM  = Linux
UNAME_VERSION = #1 SMP PREEMPT_DYNAMIC Tue, 12 Jul 2022 15:40:51 +0000
configure: error: cannot guess build type; you must specify one