Add TLS and PowerPC to Machine and Program Headers description tables to match binuti...

Add TLS and PowerPC to Machine and Program Headers description tables to match binutils output (#163)

Before:
...
  Machine:                           <unknown>
...
Program Headers:
...
  <unknown>      0x0bcd0c 0x100ccd0c 0x100ccd0c 0x00000 0x00008 R   0x4
...

After:
...
  Machine:                           PowerPC
Program Headers:
...
  TLS            0x0bcd0c 0x100ccd0c 0x100ccd0c 0x00000 0x00008 R   0x4
...

Reproduced and then tested change against statically linked PPC binary produced by MUSL:

https://github.com/mzpqnxow/embedded-toolkit/blob/master/prebuilt_static_bins/gdbserver/gdbserver-7.12-ppc-sysv