[lld] [lld] select a default eflags for hexagon (PR #108431)

[Brian Cain via llvm-commits]

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@@ -60,17 +60,17 @@ Hexagon::Hexagon() {
 }
 
 uint32_t Hexagon::calcEFlags() const {
-  assert(!ctx.objectFiles.empty());
+  static uint32_t DEFAULT_ARCH_REV = 0x60;
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androm3da wrote:

It's intentionally the smallest scope necessary.  But yeah should be `const` - will fix that.

https://github.com/llvm/llvm-project/pull/108431