[PATCH] Make stringify.sed a dependency of ALL_EMULATION_SOURCES.

[Alan Modra]

On Tue, Mar 13, 2018 at 08:37:41PM +0100, John Darrington wrote:
> * ld/Makefile.am ld/Makefile.in: ALL_EMULATION_SOURCES add dependency stringify.sed.
>   Otherwise out of source builds fail.

For which target?  We ought to already have the dependency via
GEN_DEPENDS.

-- 
Alan Modra
Australia Development Lab, IBM