mb,x86/smm: Disable unused IO traps

Only IO trap #3 for lenovo/x60,t60 and getac/p470 have implemented
the IO trap handler.

Change-Id: Ibadce174f673e88380f4b6745fd9ed8b73177a13
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70367
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/southbridge/intel/ibexpeak/lpc.c

@@ -265,10 +265,6 @@ static void mobile5_pm_init(struct device *dev)
 	(void)RCBA32(0x1d44);
 	RCBA32(0x1d48) = 0x00030000;
 	(void)RCBA32(0x1d48);
-	RCBA32(0x1e80) = 0x000c0801;
-	(void)RCBA32(0x1e80);
-	RCBA32(0x1e84) = 0x000200f0;
-	(void)RCBA32(0x1e84);
 
 	const u32 rcba2010[] = {
 		/* 2010: */ 0x00188200, 0x14000016, 0xbc4abcb5, 0x00000000,