ia64: reuse append_elf_note() and final_note() functions

ia64: reuse append_elf_note() and final_note() functions

Get rid of multiple definitions of append_elf_note() & final_note()
functions.  Reuse these functions compiled under CONFIG_CRASH_CORE Also,
define Elf_Word and use it instead of generic u32 or the more specific
Elf64_Word.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Hari Bathini <[email protected]>
Acked-by: Dave Young <[email protected]>
Acked-by: Tony Luck <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Eric Biederman <[email protected]>
Cc: Mahesh Salgaonkar <[email protected]>
Cc: Vivek Goyal <[email protected]>
Cc: Michael Ellerman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>