tplink-safeloader: add Archer C59 / C60 CA ragion code

tplink-safeloader: add Archer C59 / C60 CA ragion code

Add region codes specific to the CA regional model. his allows
installation of OpenWrt on these models.

Link: https://forum.openwrt.org/t/support-for-tp-link-archer-c59-v1-ca/140839
Link: https://forum.openwrt.org/t/adding-support-for-canadian-tp-link-archer-c60-v2-0/75273
Signed-off-by: Eric Mockler <mock7ee@gmail.com>
[rework commit message]
Signed-off-by: David Bauer <mail@david-bauer.net>