dt-bindings: hwmon: lm90: Drop Tegra specifics from example

dt-bindings: hwmon: lm90: Drop Tegra specifics from example

There's no need to complicate examples with a platform specific macro.
It also complicates example parsing to figure out the number of
interrupt cells in examples (based on bracketing).

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220119015514.2441231-1-robh@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>