gdb: Fix function parameter alignments in or1k-tdep.c.

gdb: Fix function parameter alignments in or1k-tdep.c.

As suggested by Joel Brobecker <brobecker@adacore.com> and as per fsf
coding standards.  Also fix a few more issues with directly printing
pointers.

gdb/ChangeLog:

	* gdb/or1k-tdep.c (show_or1k_debug): Fix function parameter alignment.
	(or1k_analyse_inst): Likewise.
	(or1k_single_step_through_delay): Likewise.
	(or1k_frame_cache): Fix parameter alignment and use paddress()
	instead of %x.