Fix the following build failure on riscv32: system/base/target.scm:132:16: In procedure triplet-pointer-size: unknown CPU word size "riscv32" Fixes: - http://autobuild.buildroot.org/results/6705630c1484239ec8b73d57ebc2e2570fbfc8f8 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> (cherry picked from commit 55f1afe6db597ed5d943d57d0b6acf1bbfb77a34) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>