Only print architecture dependent flags for that architecture.

Only print architecture dependent flags for that architecture.

Different architectures can have different meaning for flags in the
SHF_MASKPROC mask, so we should always check what the architecture use
before checking the flag.

NFC for now, but will allow fixing the value of an xmos flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293484 91177308-0d34-0410-b5e6-96231b3b80d8