irqchip/riscv-imsic: Fixup riscv_ipi_set_virq_range() conflict

There was a semantic conflict between 21a8f8a0 ("irqchip: Add RISC-V
incoming MSI controller early driver") and dc892fb4 ("riscv: Use
IPIs for remote cache/TLB flushes by default") due to an API change.
This manifests as a build failure post-merge.

Fixes: 0bfbc914 ("Merge tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux"

)
Reported-by: Tomasz Jeznach <tjeznach@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240522184953.28531-3-palmer@rivosinc.com
Link: https://lore.kernel.org/all/mhng-10b71228-cf3e-42ca-9abf-5464b15093f1@palmer-ri-x1c9/