irqchip/renesas-rzg2l: Split rzfive_irqc_{mask,unmask} into separate IRQ and TINT...

irqchip/renesas-rzg2l: Split rzfive_irqc_{mask,unmask} into separate IRQ and TINT handlers

rzfive_irqc_mask() and rzfive_irqc_unmask() use hw_irq range checks to
dispatch between IRQ and TINT masking operations. Split each into two
dedicated handlers — rzfive_irqc_irq_mask(), rzfive_irqc_tint_mask(),
rzfive_irqc_irq_unmask(), and rzfive_irqc_tint_unmask() — each operating
unconditionally on its respective interrupt type, removing the runtime
conditionals.

Assign the IRQ-specific handlers to rzfive_irqc_irq_chip and the
TINT-specific handlers to rzfive_irqc_tint_chip, consistent with the
separation applied to the EOI, set_type, and enable/disable callbacks in
previous patches.

While at it, simplify rzfive_irqc_{irq,tint}_{mask,unmask}() by replacing
raw_spin_lock locking/unlocking with scoped_guard().

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260325192451.172562-11-biju.das.jz@bp.renesas.com