Add the input capture interrupt on Timer Unit instances that have it.
Add "interrupt-names" properties for clarity.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/5c70ad8c2ea14333616c5add31a4a958f4a47081.1705325654.git.geert+renesas@glider.be