Linux 5.10 compat: META

Increase the Linux-Maximum version in the META file to 5.10.
All of the required compatibility patches have been merged.

Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #11391

Author: behlendorf

META

@@ -6,5 +6,5 @@ Release:       rc1
 Release-Tags:  relext
 License:       CDDL
 Author:        OpenZFS
-Linux-Maximum: 5.9
+Linux-Maximum: 5.10
 Linux-Minimum: 3.10