clearfog: Upgrade kernel

Let's move the I2C recovery into a kernel patch for upstreaming.

Also make sure that the version number is correctly set -- the relevant
branch in our kernel fork is cesnet/2022-02-17.

Change-Id: I6c2dcda4dfbccf4fe67c9536f8158c06e5c1cd27
Fixes: a12acd9 Update kernel
Fixes: f281b0c clearfog: implement I2C bus recovery
diff --git a/board/czechlight/clearfog/linux.fragment b/board/czechlight/clearfog/linux.fragment
index d939b71..f0fae65 100644
--- a/board/czechlight/clearfog/linux.fragment
+++ b/board/czechlight/clearfog/linux.fragment
@@ -51,4 +51,4 @@
 CONFIG_KEYBOARD_ATKBD=N
 CONFIG_INPUT_MOUSE=N
 
-CONFIG_LOCALVERSION="-14-gad5a3c2ef4a2"
+CONFIG_LOCALVERSION="-6-gfc198736eda4"