[binutils-gdb] Account for padding in FreeBSD/mipsn32 NT_PRSTATUS notes.

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT 544c67cda1686c1b204cb96c0d7885b08d37b8d6 ***

Author: John Baldwin <jhb@FreeBSD.org>
Branch: master
Commit: 544c67cda1686c1b204cb96c0d7885b08d37b8d6

Account for padding in FreeBSD/mipsn32 NT_PRSTATUS notes.

Add a new ELF backend method to grok FreeBSD NT_PRSTATUS core dump
notes.  Define a method for MIPS N32 to override the default
elfcore_grok_freebsd_prstatus that accounts for additional padding
between pr_pid and pr_reg that is not present in other 32-bit FreeBSD
platforms.

	* elf-bfd.h (struct elf_backend_data): Add
	`elf_backend_grok_freebsd_prstatus'.
	* elf.c (elfcore_grok_freebsd_note): Call
	`elf_backend_grok_freebsd_prstatus' to handle NT_PRSTATUS if
	present.
	* elfn32-mips.c (elf_n32_mips_grok_freebsd_prstatus): New
	function.
	(elf_backend_grok_freebsd_prstatus): Define.
	* elfxx-target.h (elf_backend_grok_freebsd_prstatus): Define.
	(elfNN_bed): Initialize `elf_backend_grok_freebsd_prstatus'.