* config/c4x/c4x-protos.h: New file.  Prototypes for functions defined
	in c4x.c.
	* config/c4x/c4x.h: Moved prototypes to c4x.h.
	* config/c4x/c4x.c (c4x_preferred_reload_class, c4x_limit_reload_class,
	c4x_secondary_memory_needed) Delete.
	(fp_zero_operand): Add mode argument.

From-SVN: r30463