gdb: Fix ARI warnings in or1k-tdep.c

gdb: Fix ARI warnings in or1k-tdep.c

Fix a few issues not using the gettext _() wrapper and issues where
we are using %p directly instead of the dedicated host/target functions.

gdb/ChangeLog:

yyyy-mm-dd  Stafford Horne  <shorne@gmail.com>

	* or1k-tdep.c (or1k_analyse_inst): Use _() wrapper for message
	strings.
	(or1k_unwind_pc): Use paddress() instead of %p.
	(or1k_unwind_sp): Likewise.
	(or1k_frame_cache): Use host_address_to_string()/paddress()
	instead of %p and use _() wrapper for message strings.