lib: sbi: Remove regs paramter of sbi_irqchip_process()

The irqchip handlers will typically not need pointer to trap registers
so remove regs parameter of sbi_irqchip_process().

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Tested-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Clément Léger <cleger@rivosinc.com>

lib/utils/irqchip/imsic.c

@@ -140,7 +140,7 @@ int imsic_get_target_file(u32 hartid)
 	return imsic_get_hart_file(scratch);
 }
 
-static int imsic_external_irqfn(struct sbi_trap_regs *regs)
+static int imsic_external_irqfn(void)
 {
 	ulong mirq;