Merge patch series "selftest: fix riscv/vector tests"

This contains a pair of fixes for the vector self tests, which avoids
some warnings and provides proper status messages.

* b4-shazam-merge:
  tools: selftests: riscv: Add test count for vstate_prctl
  tools: selftests: riscv: Add pass message for v_initval_nolibc

Link: https://lore.kernel.org/r/20241220091730.28006-1-yongxuan.wang@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>