uboot-envtools: oxnas: fix wrong eraseblock size for shuttle,kd20

Shuttle KD20 has NAND flash with 0x20000 (128KiB) erase blocks.
Correctly set that in uboot-envtools as well to allow writing to the
bootloader environment using fw_setenv.

Signed-off-by: Daniel Golle <[email protected]>

package/boot/uboot-envtools/files/oxnas

@@ -14,7 +14,7 @@ board=$(board_name)
 case "$board" in
 "cloudengines,pogoplug"*|\
 "shuttle,kd20")
-	ubootenv_add_uci_config "/dev/mtd2" "0x0" "0x2000" "0x2000" "1"
+	ubootenv_add_uci_config "/dev/mtd2" "0x0" "0x2000" "0x20000" "1"
 	;;
 "mitrastar,stg-212")
 	ubootenv_add_uci_config "/dev/mtd2" "0x0" "0x20000" "0x20000" "1"