binfmt_flat: remove flat_old_ram_flag

Instead add a Kconfig variable that only h8300 selects.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

arch/c6x/include/asm/flat.h

@@ -5,7 +5,6 @@
 #include <asm/unaligned.h>
 
 #define flat_argvp_envp_on_stack()			0
-#define flat_old_ram_flag(flags)			(flags)
 static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
 					u32 *addr, u32 *persistent)
 {