MIPS: Move vmlinux.ecoff to arch/mips/boot

It moves to the same directory as the boot files in other formats.
Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/796/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/boot/Makefile

@@ -28,7 +28,7 @@ VMLINUX = vmlinux
 all: vmlinux.ecoff vmlinux.srec
 
 vmlinux.ecoff: $(obj)/elf2ecoff $(VMLINUX)
-	$(obj)/elf2ecoff $(VMLINUX) vmlinux.ecoff $(E2EFLAGS)
+	$(obj)/elf2ecoff $(VMLINUX) $(obj)/vmlinux.ecoff $(E2EFLAGS)
 
 $(obj)/elf2ecoff: $(obj)/elf2ecoff.c
 	$(HOSTCC) -o $@ $^