x86/ioapic: Cleanup structs

Make them conforming to the TIP coding style guide.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Tested-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/all/20240802155440.402005874@linutronix.de

arch/x86/kernel/apic/io_apic.c

@@ -105,13 +105,9 @@ struct mp_ioapic_gsi {
 };
 
 static struct ioapic {
-	/*
-	 * # of IRQ routing registers
-	 */
+	/* # of IRQ routing registers */
 	int				nr_registers;
-	/*
-	 * Saved state during suspend/resume, or while enabling intr-remap.
-	 */
+	/* Saved state during suspend/resume, or while enabling intr-remap. */
 	struct IO_APIC_route_entry	*saved_registers;
 	/* I/O APIC config */
 	struct mpc_ioapic		mp_config;