Fix off-by-one error in passing initrd end address via device tree

The initrd_end variable contains the address immediately *after* the
initrd blob, not the last address containing data.  This patch fixes
an inadvertent off-by-one when setting up the initrd reserved map.

Signed-off-by: Grant Likely <grant.likely@linaro.org>

common/fdt_support.c

@@ -183,7 +183,7 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
 		}
 	}
 
-	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
+	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start);
 	if (err < 0) {
 		printf("fdt_initrd: %s\n", fdt_strerror(err));
 		return err;