[clang] [Hexagon][Driver] Tell llvm-mc about PIC under -fno-integrated-as (PR #213821)

[Alexey Karyakin via cfe-commits]

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@@ -0,0 +1,36 @@
+/// Hexagon selects the .eh_frame FDE pointer encoding from whether the code is
+/// position independent (DW_EH_PE_pcrel vs DW_EH_PE_absptr, see
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quic-akaryaki wrote:

I think an MC test that demonstrates the difference could be useful, if it does not exist yet.

https://github.com/llvm/llvm-project/pull/213821