soc/amd/stoneyridge/acpi: drop wrong comment in MADT code

The IOAPIC structure that this function created is for the IOAPIC in the
GNB and not the one in the FCH which is called Kern in this SoC.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I6eec02578f2b2e8b8c10dad7eeecff961ef45e76
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79883
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/stoneyridge/acpi.c

@@ -24,7 +24,6 @@
 
 unsigned long acpi_fill_madt(unsigned long current)
 {
-	/* Write Kern IOAPIC, only one */
 	current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, IO_APIC2_ADDR);
 
 	return current;