[clang] [Driver] Hook up NetBSD/riscv64 support (PR #67256)

[Fangrui Song via cfe-commits]

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@@ -124,6 +130,14 @@
 // AARCH64_BE-7: "-lm" "-lc"
 // AARCH64_BE-7: "{{.*}}/usr/lib{{/|\\\\}}crtend.o" "{{.*}}/usr/lib{{/|\\\\}}crtn.o"
 
+// RISCV64: "-cc1" "-triple" "riscv64-unknown-netbsd"
+// RISCV64: ld{{.*}}" "--eh-frame-hdr" "-dynamic-linker" "/libexec/ld.elf_so"
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MaskRay wrote:

Use `-SAME:` for continuation lines for new tests:)

https://github.com/llvm/llvm-project/pull/67256