Merging r368964:

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r368964 | maskray | 2019-08-15 07:22:23 +0200 (Thu, 15 Aug 2019) | 11 lines

[ELF][PPC] Improve error message for unknown relocations

Like rLLD354040.

Previously, for unrecognized relocation types, in -no-pie mode:

  foo.o: unrecognized reloc 256

In -pie/-shared mode:

  error: can't create dynamic relocation R_PPC_xxx against symbol: yyy in readonly segment
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llvm-svn: 370312