dt-bindings: Add missing 'properties' keyword enclosing 'snps,tso'

dt-bindings: Add missing 'properties' keyword enclosing 'snps,tso'

BugLink: https://bugs.launchpad.net/bugs/1862429
commit dbce0b65046d1735d7054c54ec2387dba84ba258 upstream.

DT property definitions must be under a 'properties' keyword. This was
missing for 'snps,tso' in an if/then clause. A meta-schema fix will
catch future errors like this.

Fixes: 7db3545aef5f ("dt-bindings: net: stmmac: Convert the binding to a schemas")
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>