irqchip/renesas-rzg2l: Split rzfive_tint_irq_endisable() into separate IRQ and TINT...

irqchip/renesas-rzg2l: Split rzfive_tint_irq_endisable() into separate IRQ and TINT helpers

rzfive_tint_irq_endisable() handles both IRQ and TINT enable/disable paths
via a hw_irq range check.

Split this into two dedicated helpers, rzfive_irq_endisable() for IRQ
interrupts and rzfive_tint_endisable() for TINT interrupts, each operating
unconditionally on their respective interrupt type.

While at it, simplify rzfive_{irq,tint}_endisable by replacing
raw_spin_lock locking/unlocking with guard() and update the variable types
of offset, tssr_offset, and tssr_index to unsigned int, as these variables
are used only for calculation.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260325192451.172562-10-biju.das.jz@bp.renesas.com