lib: utils/irqchip: Add unique_id to plic, aplic, and imsic data

Add a 32-bit unique ID to plic, aplic, and imsic data which can be
used to differentiate multiple irqchip devices.

Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260213055342.3124872-7-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>

include/sbi_utils/irqchip/plic.h

@@ -17,6 +17,7 @@ struct plic_data {
 	/* Private members */
 	struct sbi_irqchip_device irqchip;
 	/* Public members */
+	u32 unique_id;
 	unsigned long addr;
 	unsigned long size;
 	unsigned long num_src;