test-cross: add riscv32, arm-unknown, armeb to heredoc

Author: bcoles

tests/test-cross

@@ -85,13 +85,16 @@ run_target() {
 #   armv7   -> arm32 highmem_32bit_bound
 #   mips    -> mips32 min_offset_from_image_size
 #   powerpc -> ppc32 phys_ceiling (big-endian)
+#   riscv32 -> page_offset_invariant_pin + text_base_coupling_synth active
 # The ppc32 little-endian toolchain (powerpcle-unknown-linux-musl) has no
 # 32-bit-LE qemu-user binary, so that variant stays live-test-only.
 while read -r triple qbin; do
   [ -z "$triple" ] && continue
   run_target "$triple" "$qbin"
 done <<'EOF'
 aarch64-linux-musl qemu-aarch64
+arm-unknown-linux-musleabi qemu-arm
+armeb-linux-musleabi qemu-armeb
 armv7-unknown-linux-musleabi qemu-arm
 i686-unknown-linux-musl qemu-i386
 mips64-unknown-linux-musl qemu-mips64
@@ -102,6 +105,7 @@ powerpc64le-unknown-linux-musl qemu-ppc64le
 loongarch64-unknown-linux-musl qemu-loongarch64
 mips-unknown-linux-musl qemu-mips
 mipsel-unknown-linux-musl qemu-mipsel
+riscv32-linux-musl qemu-riscv32
 riscv64-linux-musl qemu-riscv64
 s390x-ibm-linux-musl qemu-s390x
 x86_64-linux-musl qemu-x86_64