v850_elf_set_note prototype

v850_elf_set_note is declared using an unsigned int note param in
elf32-v850.h but defined with enum c850_notes note in elf32-v850.c.
Current mainline gcc is warning about this.  Huh.

	* elf32-v850.c (v850_elf_set_note): Make "note" param an
	unsigned int.