irqchip/renesas-rzv2h: Fix wrong variable usage in rzv2h_tint_set_type()

irqchip/renesas-rzv2h: Fix wrong variable usage in rzv2h_tint_set_type()

The variable tssel_n is used for selecting TINT source and titsel_n for
setting the interrupt type. The variable titsel_n is wrongly used for
enabling the TINT interrupt in rzv2h_tint_set_type(). Fix this issue by
using the correct variable tssel_n.

While at it, move the tien variable assignment near to tssr.

Fixes: 0d7605e75ac2 ("irqchip: Add RZ/V2H(P) Interrupt Control Unit (ICU) driver")
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20250224131253.134199-3-biju.das.jz@bp.renesas.com
Closes: https://lore.kernel.org/CAMuHMdU3xJpz-jh=j7t4JreBat2of2ksP_OR3+nKAoZBr4pSxg@mail.gmail.com