sb/intel/i82801dx: Improve LPC device early init

Make the implementation more similar to i82801gx, enabling
ACPI PM and GPIO register spaces already in bootblock.

Change-Id: I41ad8622801dbbadafdc37359d521eed42256e63
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69671
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/northbridge/intel/e7505/romstage.c

@@ -8,10 +8,9 @@
 
 void mainboard_romstage_entry(void)
 {
-	/* Perform some early chipset initialization required
-	 * before RAM initialization can work
-	 */
+	/* FIXME: Keep until flashed bootblock has these. */
 	i82801dx_early_init();
+	i82801dx_lpc_setup();
 
 	sdram_initialize();