[PATCH] perf callchain: fixup help/config for no-unwinding

From: Rabin Vincent Since 841e3558b2d ("perf callchain: Recording 'dwarf' callchains do not need DWARF unwinding support"), --call-graph dwarf is allowed in perf record even without unwind support. A couple of other places don't reflect this yet though: the help text should

[PATCH] perf callchain: fixup help/config for no-unwinding

From: Rabin Vincent Since 841e3558b2d ("perf callchain: Recording 'dwarf' callchains do not need DWARF unwinding support"), --call-graph dwarf is allowed in perf record even without unwind support. A couple of other places don't reflect this yet though: the help text should list dwarf as a