mn10300 commit, minor typo

[Michael Snyder]

David Anderson wrote:
> mn10300-prologue.c
> +    MY_FRAME_IN_SP: The base of the current frame is actually in
> +    the stack pointer.  This can happen for frame pointerless
> +    functions, or cases where we're stopped in the prologue/epilogue
> +    itself.  For these cases mn10300_analyze_prologue will need up
> +    update fi->frame before returning or analyzing the register
> 
> 	'need up  update ' (see 2 lines above)  should be ... what?
> 
> +    save instructions.
> 

Probably "speed up".