[dsymutil] Support generating dSYMs for firmware environments (llvm#87432)

Support generating dSYM companion files for (non-Darwin) firmware
environments by considering the binary component of the triple in
addition to the OS component.

rdar://125629792

Author: JDevlieghere

llvm/test/tools/dsymutil/ARM/firmware.test

@@ -0,0 +1,11 @@
+$ cat test.c
+int main() {
+  return 0;
+}
+
+$ xcrun clang -O0 -target arm64-apple-unknown-macho test.c -c -o test.o
+$ xcrun ld -arch arm64 -o test.out test.o -platform_version firmware 0 0
+
+RUN: dsymutil -oso-prepend-path %p/../Inputs %p/../Inputs/private/tmp/firmware/test.out -o %t.dSYM
+RUN: llvm-objdump -h %t.dSYM/Contents/Resources/DWARF/test.out | FileCheck %s
+CHECK: file format mach-o arm64

llvm/test/tools/dsymutil/Inputs/private/tmp/firmware/test.o

@@ -857,7 +857,9 @@ bool DwarfLinkerForBinary::linkImpl(
       return error(toString(std::move(E)));
   }
 
-  if (Map.getTriple().isOSDarwin() && !Map.getBinaryPath().empty() &&
+  auto MapTriple = Map.getTriple();
+  if ((MapTriple.isOSDarwin() || MapTriple.isOSBinFormatMachO()) &&
+      !Map.getBinaryPath().empty() &&
       ObjectType == Linker::OutputFileType::Object)
     return MachOUtils::generateDsymCompanion(
         Options.VFS, Map, *Streamer->getAsmPrinter().OutStreamer, OutFile,