common: Move jumptable_init() out of common.h

This function is defined in exports.c so move it to its header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

include/common.h

@@ -80,9 +80,6 @@ extern ulong load_addr;		/* Default Load Address */
 extern ulong save_addr;		/* Default Save Address */
 extern ulong save_size;		/* Default Save Size */
 
-/* common/exports.c */
-void	jumptable_init(void);
-
 /* common/kallsysm.c */
 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);