elfutils: 0.176 -> 0.177

elfutils: 0.176 -> 0.177

- Update Debian patches
  http://ftp.de.debian.org/debian/pool/main/e/elfutils/elfutils_0.176-1.debian.tar.xz

- Rebase Debian patches to 0.177
  debian/hppa_backend.diff
  debian/mips_backend.diff
  debian/arm_backend.diff
  debian/mips_readelf_w.patch
  debian/testsuite-ignore-elflint.diff
  debian/mips_cfi.patch

- Fix build failure while applying debian patches
  0001-fix-compile-failure-with-debian-patches.patch

- Rebase musl patches

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>