wifi: iMac19,1 is Midway

I'm not sure why I entered this wrong
Dunedan/mbp-2016-linux#112 (comment)

also convert 4355 revision 0c to decimal 12

docs/guides/wifi.md

@@ -31,13 +31,13 @@ Please use the table below to check which patchsets will work for your model.
 | MacBookPro15,3   | BCM4364 | 3        | Kauai    | Mojave / Big Sur     |
 | MacBookPro15,4   | BCM4377 | 4        | Formosa  | Big Sur              |
 | MacBookAir9,1    | BCM4377 | 4        | Fiji     | Big Sur              |
-| MacBookAir8,1    | BCM4355 | ?        | Hawaii   | Mojave / Big Sur     |
-| MacBookAir8,2    | BCM4355 | 0c       | Hawaii   | Mojave / Big Sur     |
+| MacBookAir8,1    | BCM4355 | 12       | Hawaii   | Mojave / Big Sur     |
+| MacBookAir8,2    | BCM4355 | 12       | Hawaii   | Mojave / Big Sur     |
 | MacMini8,1       | BCM4364 | 3        | Lanai    | Mojave / Big Sur     |
 | MacPro7,1        | BCM4364 | 4        | Kahana   | Big Sur              |
 | iMac20,1         | BCM4364 | 4        | Hanauma  | Big Sur              |
 | iMac20,2         | BCM4364 | 4        | Kure     | Big Sur              |
-| iMac19,1*        | BCM4364 | 3        | Nihau    | Mojave / Big Sur     |
+| iMac19,1*        | BCM4364 | 3        | Midway   | Mojave / Big Sur     |
 | iMac19,2*        | BCM4364 | 3        | Nihau    | Mojave / Big Sur     |
 | iMacPro1,1       | BCM4364 | ?        | Ekans?   | Mojave / Big Sur?    |